1597941930 has 64 divisors (see below), whose sum is σ = 4161725568. Its totient is φ = 390324480.

The previous prime is 1597941887. The next prime is 1597941931. The reversal of 1597941930 is 391497951.

It is a nialpdrome in base 15.

It is a self number, because there is not a number n which added to its sum of digits gives 1597941930.

It is not an unprimeable number, because it can be changed into a prime (1597941931) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 35452 + ... + 66728.

It is an arithmetic number, because the mean of its divisors is an integer number (65026962).

Almost surely, 2^1597941930 is an apocalyptic number.

1597941930 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1597941930, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2080862784).

1597941930 is an abundant number, since it is smaller than the sum of its proper divisors (2563783638).

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

1597941930 is a wasteful number, since it uses less digits than its factorization.

1597941930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31431.

The product of its (nonzero) digits is 306180, while the sum is 48.

The square root of 1597941930 is about 39974.2658469171. The cubic root of 1597941930 is about 1169.1053940130.

The spelling of 1597941930 in words is "one billion, five hundred ninety-seven million, nine hundred forty-one thousand, nine hundred thirty".