1694426931 has 10 divisors (see below), whose sum is σ = 2531181092. Its totient is φ = 1129617900.

The previous prime is 1694426927. The next prime is 1694426947. The reversal of 1694426931 is 1396244961.

It is not a de Polignac number, because 1694426931 - 2² = 1694426927 is a prime.

It is a super-2 number, since 2×1694426931² = 5742165248996157522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1694426831) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 10459345 + ... + 10459506.

Almost surely, 2^1694426931 is an apocalyptic number.

1694426931 is a deficient number, since it is larger than the sum of its proper divisors (836754161).

1694426931 is an equidigital number, since it uses as much as digits as its factorization.

1694426931 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20918863 (or 20918854 counting only the distinct ones).

The product of its digits is 279936, while the sum is 45.

The square root of 1694426931 is about 41163.4173872870. The cubic root of 1694426931 is about 1192.1775751075.

The spelling of 1694426931 in words is "one billion, six hundred ninety-four million, four hundred twenty-six thousand, nine hundred thirty-one".