1639334156 has 12 divisors (see below), whose sum is σ = 2967760320. Its totient is φ = 791402640.

The previous prime is 1639334143. The next prime is 1639334159. The reversal of 1639334156 is 6514339361.

It is not an unprimeable number, because it can be changed into a prime (1639334159) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7065980 + ... + 7066211.

It is an arithmetic number, because the mean of its divisors is an integer number (247313360).

Almost surely, 2^1639334156 is an apocalyptic number.

It is an amenable number.

1639334156 is a deficient number, since it is larger than the sum of its proper divisors (1328426164).

1639334156 is a wasteful number, since it uses less digits than its factorization.

1639334156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14132224 (or 14132222 counting only the distinct ones).

The product of its digits is 174960, while the sum is 41.

The square root of 1639334156 is about 40488.6917052157. The cubic root of 1639334156 is about 1179.1140903898.

The spelling of 1639334156 in words is "one billion, six hundred thirty-nine million, three hundred thirty-four thousand, one hundred fifty-six".