2139263451 has 12 divisors (see below), whose sum is σ = 3327743328. Its totient is φ = 1316469744.

The previous prime is 2139263449. The next prime is 2139263461. The reversal of 2139263451 is 1543629312.

2139263451 is a `hidden beast` number, since 2 + 13 + 9 + 2 + 634 + 5 + 1 = 666.

It is not a de Polignac number, because 2139263451 - 2¹ = 2139263449 is a prime.

It is a super-2 number, since 2×2139263451² = 9152896225568858802, which contains 22 as substring.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (2139263461) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9142035 + ... + 9142268.

It is an arithmetic number, because the mean of its divisors is an integer number (277311944).

Almost surely, 2^2139263451 is an apocalyptic number.

2139263451 is a deficient number, since it is larger than the sum of its proper divisors (1188479877).

2139263451 is a wasteful number, since it uses less digits than its factorization.

2139263451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18284322 (or 18284319 counting only the distinct ones).

The product of its digits is 38880, while the sum is 36.

The square root of 2139263451 is about 46252.1723922239. The cubic root of 2139263451 is about 1288.5108812923.

The spelling of 2139263451 in words is "two billion, one hundred thirty-nine million, two hundred sixty-three thousand, four hundred fifty-one".