1381594752 has 128 divisors (see below), whose sum is σ = 4106520000. Its totient is φ = 457270272.

The previous prime is 1381594741. The next prime is 1381594757. The reversal of 1381594752 is 2574951831.

1381594752 is a `hidden beast` number, since 1 + 3 + 8 + 1 + 594 + 7 + 52 = 666.

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

It is a junction number, because it is equal to n+sod(n) for n = 1381594698 and 1381594707.

It is not an unprimeable number, because it can be changed into a prime (1381594757) 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, 513603 + ... + 516285.

Almost surely, 2^1381594752 is an apocalyptic number.

1381594752 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 1381594752, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2053260000).

1381594752 is an abundant number, since it is smaller than the sum of its proper divisors (2724925248).

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

1381594752 is a wasteful number, since it uses less digits than its factorization.

1381594752 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2855 (or 2837 counting only the distinct ones).

The product of its digits is 302400, while the sum is 45.

The square root of 1381594752 is about 37169.8096847428. The cubic root of 1381594752 is about 1113.7649800160.

The spelling of 1381594752 in words is "one billion, three hundred eighty-one million, five hundred ninety-four thousand, seven hundred fifty-two".