1597452372 has 18 divisors (see below), whose sum is σ = 4038004698. Its totient is φ = 532484112.

The previous prime is 1597452371. The next prime is 1597452421. The reversal of 1597452372 is 2732547951.

It is a happy number.

1597452372 is a `hidden beast` number, since 1 + 59 + 7 + 4 + 523 + 72 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1304220996 + 293231376 = 36114^2 + 17124^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1597452371) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 22186803 + ... + 22186874.

Almost surely, 2^1597452372 is an apocalyptic number.

1597452372 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1597452372 is an abundant number, since it is smaller than the sum of its proper divisors (2440552326).

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

1597452372 is a wasteful number, since it uses less digits than its factorization.

1597452372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44373687 (or 44373682 counting only the distinct ones).

The product of its digits is 529200, while the sum is 45.

The square root of 1597452372 is about 39968.1419633187. The cubic root of 1597452372 is about 1168.9859897245.

The spelling of 1597452372 in words is "one billion, five hundred ninety-seven million, four hundred fifty-two thousand, three hundred seventy-two".