1397561934 has 16 divisors (see below), whose sum is σ = 2815527888. Its totient is φ = 462453312.

The previous prime is 1397561923. The next prime is 1397561951. The reversal of 1397561934 is 4391657931.

It is a congruent 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, 849277 + ... + 850920.

It is an arithmetic number, because the mean of its divisors is an integer number (175970493).

Almost surely, 2^1397561934 is an apocalyptic number.

1397561934 is an abundant number, since it is smaller than the sum of its proper divisors (1417965954).

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

1397561934 is a wasteful number, since it uses less digits than its factorization.

1397561934 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1700339.

The product of its digits is 612360, while the sum is 48.

The square root of 1397561934 is about 37383.9796436923. The cubic root of 1397561934 is about 1118.0391748759.

The spelling of 1397561934 in words is "one billion, three hundred ninety-seven million, five hundred sixty-one thousand, nine hundred thirty-four".