1597138960 has 40 divisors (see below), whose sum is σ = 3792364416. Its totient is φ = 625261440.

The previous prime is 1597138931. The next prime is 1597138979. The reversal of 1597138960 is 698317951.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 208626 + ... + 216145.

Almost surely, 2^1597138960 is an apocalyptic number.

1597138960 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1597138960 is an abundant number, since it is smaller than the sum of its proper divisors (2195225456).

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

1597138960 is a wasteful number, since it uses less digits than its factorization.

1597138960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 424831 (or 424825 counting only the distinct ones).

The product of its (nonzero) digits is 408240, while the sum is 49.

The square root of 1597138960 is about 39964.2209982880. The cubic root of 1597138960 is about 1168.9095350298.

The spelling of 1597138960 in words is "one billion, five hundred ninety-seven million, one hundred thirty-eight thousand, nine hundred sixty".