1597764642 has 16 divisors (see below), whose sum is σ = 3197662272. Its totient is φ = 532232720.

The previous prime is 1597764607. The next prime is 1597764661. The reversal of 1597764642 is 2464677951.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 79053 + ... + 97184.

It is an arithmetic number, because the mean of its divisors is an integer number (199853892).

Almost surely, 2^1597764642 is an apocalyptic number.

1597764642 is an abundant number, since it is smaller than the sum of its proper divisors (1599897630).

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

1597764642 is a wasteful number, since it uses less digits than its factorization.

1597764642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 177753.

The product of its digits is 2540160, while the sum is 51.

The square root of 1597764642 is about 39972.0482587520. The cubic root of 1597764642 is about 1169.0621558913.

The spelling of 1597764642 in words is "one billion, five hundred ninety-seven million, seven hundred sixty-four thousand, six hundred forty-two".