1597657952 has 48 divisors (see below), whose sum is σ = 3439803024. Its totient is φ = 724416000.

The previous prime is 1597657951. The next prime is 1597657967. The reversal of 1597657952 is 2597567951.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1597657951) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 142802 + ... + 153582.

It is an arithmetic number, because the mean of its divisors is an integer number (71662563).

Almost surely, 2^1597657952 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1597657952, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1719901512).

1597657952 is an abundant number, since it is smaller than the sum of its proper divisors (1842145072).

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

1597657952 is a wasteful number, since it uses less digits than its factorization.

1597657952 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11223 (or 11215 counting only the distinct ones).

The product of its digits is 5953500, while the sum is 56.

The square root of 1597657952 is about 39970.7136788924. The cubic root of 1597657952 is about 1169.0361341160.

Subtracting 1597657952 from its reverse (2597567951), we obtain a palindrome (999909999).

The spelling of 1597657952 in words is "one billion, five hundred ninety-seven million, six hundred fifty-seven thousand, nine hundred fifty-two".