1331604694 has 12 divisors (see below), whose sum is σ = 2323514484. Its totient is φ = 570687684.

The previous prime is 1331604691. The next prime is 1331604697. The reversal of 1331604694 is 4964061331.

It is an interprime number because it is at equal distance from previous prime (1331604691) and next prime (1331604697).

It is a super-2 number, since 2×1331604694² = 3546342122165667272, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1331604691) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6793804 + ... + 6793999.

It is an arithmetic number, because the mean of its divisors is an integer number (193626207).

Almost surely, 2^1331604694 is an apocalyptic number.

1331604694 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

1331604694 is a deficient number, since it is larger than the sum of its proper divisors (991909790).

1331604694 is a wasteful number, since it uses less digits than its factorization.

1331604694 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13587819 (or 13587812 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 37.

The square root of 1331604694 is about 36491.1591210803. The cubic root of 1331604694 is about 1100.1665571485.

The spelling of 1331604694 in words is "one billion, three hundred thirty-one million, six hundred four thousand, six hundred ninety-four".