2139837651 has 48 divisors (see below), whose sum is σ = 3860932608. Its totient is φ = 1113696000.

The previous prime is 2139837649. The next prime is 2139837653. The reversal of 2139837651 is 1567389312.

It is an interprime number because it is at equal distance from previous prime (2139837649) and next prime (2139837653).

It is not a de Polignac number, because 2139837651 - 2¹ = 2139837649 is a prime.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 2139837597 and 2139837606.

It is not an unprimeable number, because it can be changed into a prime (2139837653) 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 47 ways as a sum of consecutive naturals, for example, 976 + ... + 65426.

It is an arithmetic number, because the mean of its divisors is an integer number (80436096).

Almost surely, 2^2139837651 is an apocalyptic number.

2139837651 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

2139837651 is a deficient number, since it is larger than the sum of its proper divisors (1721094957).

2139837651 is a wasteful number, since it uses less digits than its factorization.

2139837651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64512 (or 64509 counting only the distinct ones).

The product of its digits is 272160, while the sum is 45.

The square root of 2139837651 is about 46258.3792517637. The cubic root of 2139837651 is about 1288.6261541077.

It can be divided in two parts, 21398 and 37651, that added together give a 10-th power (59049 = 3¹⁰).

The spelling of 2139837651 in words is "two billion, one hundred thirty-nine million, eight hundred thirty-seven thousand, six hundred fifty-one".