1394664931 has 8 divisors (see below), whose sum is σ = 1530249264. Its totient is φ = 1260546720.

The previous prime is 1394664913. The next prime is 1394664937.

1394664931 is nontrivially palindromic in base 10.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1394664931 is a prime.

It is a super-2 number, since 2×1394664931² = 3890180539522469522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1394664937) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 364536 + ... + 368341.

It is an arithmetic number, because the mean of its divisors is an integer number (191281158).

Almost surely, 2^1394664931 is an apocalyptic number.

1394664931 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1394664931 is a deficient number, since it is larger than the sum of its proper divisors (135584333).

1394664931 is a wasteful number, since it uses less digits than its factorization.

1394664931 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 733061.

The product of its digits is 419904, while the sum is 46.

The square root of 1394664931 is about 37345.2129596284. The cubic root of 1394664931 is about 1117.2661135041.

The spelling of 1394664931 in words is "one billion, three hundred ninety-four million, six hundred sixty-four thousand, nine hundred thirty-one".