1597202128 has 20 divisors (see below), whose sum is σ = 3160422720. Its totient is φ = 781609184.

The previous prime is 1597202093. The next prime is 1597202137. The reversal of 1597202128 is 8212027951.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1061218 + ... + 1062721.

It is an arithmetic number, because the mean of its divisors is an integer number (158021136).

Almost surely, 2^1597202128 is an apocalyptic number.

It is an amenable number.

1597202128 is a deficient number, since it is larger than the sum of its proper divisors (1563220592).

1597202128 is a wasteful number, since it uses less digits than its factorization.

1597202128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2123994 (or 2123988 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 37.

The square root of 1597202128 is about 39965.0112973836. The cubic root of 1597202128 is about 1168.9249452323.

The spelling of 1597202128 in words is "one billion, five hundred ninety-seven million, two hundred two thousand, one hundred twenty-eight".