2426665138 has 4 divisors (see below), whose sum is σ = 3639997710. Its totient is φ = 1213332568.

The previous prime is 2426665127. The next prime is 2426665177. The reversal of 2426665138 is 8315666242.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1511421129 + 915244009 = 38877^2 + 30253^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2426665094 and 2426665103.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 606666283 + ... + 606666286.

Almost surely, 2^2426665138 is an apocalyptic number.

2426665138 is a deficient number, since it is larger than the sum of its proper divisors (1213332572).

2426665138 is a wasteful number, since it uses less digits than its factorization.

2426665138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1213332571.

The product of its digits is 414720, while the sum is 43.

The square root of 2426665138 is about 49261.1930225000. The cubic root of 2426665138 is about 1343.8061273314.

The spelling of 2426665138 in words is "two billion, four hundred twenty-six million, six hundred sixty-five thousand, one hundred thirty-eight".