2639000156 has 24 divisors (see below), whose sum is σ = 4975256160. Its totient is φ = 1217570112.

The previous prime is 2639000101. The next prime is 2639000167. The reversal of 2639000156 is 6510009362.

It is a happy number.

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, 176210 + ... + 190598.

It is an arithmetic number, because the mean of its divisors is an integer number (207302340).

Almost surely, 2^2639000156 is an apocalyptic number.

2639000156 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

2639000156 is a deficient number, since it is larger than the sum of its proper divisors (2336256004).

2639000156 is a wasteful number, since it uses less digits than its factorization.

2639000156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17933 (or 17931 counting only the distinct ones).

The product of its (nonzero) digits is 9720, while the sum is 32.

The square root of 2639000156 is about 51371.1996745258. The cubic root of 2639000156 is about 1381.9101455567.

The spelling of 2639000156 in words is "two billion, six hundred thirty-nine million, one hundred fifty-six", and thus it is an aban number.