1381590912 has 128 divisors (see below), whose sum is σ = 3992002560. Its totient is φ = 420820992.

The previous prime is 1381590911. The next prime is 1381590913. The reversal of 1381590912 is 2190951831.

It is an interprime number because it is at equal distance from previous prime (1381590911) and next prime (1381590913).

It is a tau number, because it is divible by the number of its divisors (128).

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1381590911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 512833 + ... + 515519.

It is an arithmetic number, because the mean of its divisors is an integer number (31187520).

Almost surely, 2^1381590912 is an apocalyptic number.

1381590912 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1381590912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1996001280).

1381590912 is an abundant number, since it is smaller than the sum of its proper divisors (2610411648).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1381590912 is a wasteful number, since it uses less digits than its factorization.

1381590912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2820 (or 2808 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 39.

The square root of 1381590912 is about 37169.7580298823. The cubic root of 1381590912 is about 1113.7639481501.

The spelling of 1381590912 in words is "one billion, three hundred eighty-one million, five hundred ninety thousand, nine hundred twelve".