1331660038 has 16 divisors (see below), whose sum is σ = 2020379760. Its totient is φ = 658215936.

The previous prime is 1331660023. The next prime is 1331660059. The reversal of 1331660038 is 8300661331.

It is a super-2 number, since 2×1331660038² = 3546636913612322888, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1331659991 and 1331660009.

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, 192345 + ... + 199147.

It is an arithmetic number, because the mean of its divisors is an integer number (126273735).

Almost surely, 2^1331660038 is an apocalyptic number.

1331660038 is a deficient number, since it is larger than the sum of its proper divisors (688719722).

1331660038 is a wasteful number, since it uses less digits than its factorization.

1331660038 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7911.

The product of its (nonzero) digits is 7776, while the sum is 31.

The square root of 1331660038 is about 36491.9174338647. The cubic root of 1331660038 is about 1100.1817986024.

The spelling of 1331660038 in words is "one billion, three hundred thirty-one million, six hundred sixty thousand, thirty-eight".