268139151 has 24 divisors (see below), whose sum is σ = 444391584. Its totient is φ = 152616960.

The previous prime is 268139149. The next prime is 268139171. The reversal of 268139151 is 151931862.

268139151 is a `hidden beast` number, since 268 + 1 + 391 + 5 + 1 = 666.

It is not a de Polignac number, because 268139151 - 2¹ = 268139149 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (268139171) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7911 + ... + 24471.

It is an arithmetic number, because the mean of its divisors is an integer number (18516316).

Almost surely, 2^268139151 is an apocalyptic number.

268139151 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

268139151 is a deficient number, since it is larger than the sum of its proper divisors (176252433).

268139151 is a wasteful number, since it uses less digits than its factorization.

268139151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16831 (or 16828 counting only the distinct ones).

The product of its digits is 12960, while the sum is 36.

The square root of 268139151 is about 16374.9549923046. The cubic root of 268139151 is about 644.8421391211.

The spelling of 268139151 in words is "two hundred sixty-eight million, one hundred thirty-nine thousand, one hundred fifty-one".