1639013356 has 12 divisors (see below), whose sum is σ = 2868652192. Its totient is φ = 819398448.

The previous prime is 1639013351. The next prime is 1639013371. The reversal of 1639013356 is 6533109361.

It is a super-2 number, since 2×1639013356² = 5372729562292765472, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1639013351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13906 + ... + 58918.

Almost surely, 2^1639013356 is an apocalyptic number.

It is an amenable number.

1639013356 is a deficient number, since it is larger than the sum of its proper divisors (1229638836).

1639013356 is a wasteful number, since it uses less digits than its factorization.

1639013356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54120 (or 54118 counting only the distinct ones).

The product of its (nonzero) digits is 43740, while the sum is 37.

The square root of 1639013356 is about 40484.7299114123. The cubic root of 1639013356 is about 1179.0371720721.

The spelling of 1639013356 in words is "one billion, six hundred thirty-nine million, thirteen thousand, three hundred fifty-six".