1597994252 has 6 divisors (see below), whose sum is σ = 2796489948. Its totient is φ = 798997124.

The previous prime is 1597994243. The next prime is 1597994257. The reversal of 1597994252 is 2524997951.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1597994194 and 1597994203.

It is not an unprimeable number, because it can be changed into a prime (1597994257) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 199749278 + ... + 199749285.

It is an arithmetic number, because the mean of its divisors is an integer number (466081658).

Almost surely, 2^1597994252 is an apocalyptic number.

It is an amenable number.

1597994252 is a deficient number, since it is larger than the sum of its proper divisors (1198495696).

1597994252 is a wasteful number, since it uses less digits than its factorization.

1597994252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 399498567 (or 399498565 counting only the distinct ones).

The product of its digits is 2041200, while the sum is 53.

The square root of 1597994252 is about 39974.9202876003. The cubic root of 1597994252 is about 1169.1181540230.

The spelling of 1597994252 in words is "one billion, five hundred ninety-seven million, nine hundred ninety-four thousand, two hundred fifty-two".