2137408281 has 24 divisors (see below), whose sum is σ = 3177588960. Its totient is φ = 1383881856.

The previous prime is 2137408277. The next prime is 2137408297. The reversal of 2137408281 is 1828047312.

2137408281 is a `hidden beast` number, since 2 + 1 + 374 + 0 + 8 + 281 = 666.

It is not a de Polignac number, because 2137408281 - 2² = 2137408277 is a prime.

It is a super-2 number, since 2×2137408281² = 9137028319374749922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2137408201) 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 23 ways as a sum of consecutive naturals, for example, 19825 + ... + 68321.

It is an arithmetic number, because the mean of its divisors is an integer number (132399540).

Almost surely, 2^2137408281 is an apocalyptic number.

It is an amenable number.

2137408281 is a deficient number, since it is larger than the sum of its proper divisors (1040180679).

2137408281 is a wasteful number, since it uses less digits than its factorization.

2137408281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48645 (or 48642 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 36.

The square root of 2137408281 is about 46232.1130925248. The cubic root of 2137408281 is about 1288.1383078799.

The spelling of 2137408281 in words is "two billion, one hundred thirty-seven million, four hundred eight thousand, two hundred eighty-one".