1385611960 has 64 divisors (see below), whose sum is σ = 3257210880. Its totient is φ = 529864320.

The previous prime is 1385611949. The next prime is 1385611963. The reversal of 1385611960 is 691165831.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1385611963) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 96189 + ... + 109651.

It is an arithmetic number, because the mean of its divisors is an integer number (50893920).

Almost surely, 2^1385611960 is an apocalyptic number.

1385611960 is a gapful number since it is divisible by the number (10) 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 1385611960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1628605440).

1385611960 is an abundant number, since it is smaller than the sum of its proper divisors (1871598920).

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

1385611960 is a wasteful number, since it uses less digits than its factorization.

1385611960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13588 (or 13584 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 40.

The square root of 1385611960 is about 37223.8090474363. The cubic root of 1385611960 is about 1114.8434187945.

The spelling of 1385611960 in words is "one billion, three hundred eighty-five million, six hundred eleven thousand, nine hundred sixty".