151512993 has 12 divisors (see below), whose sum is σ = 231725988. Its totient is φ = 95066880.

The previous prime is 151512989. The next prime is 151513031. The reversal of 151512993 is 399215151.

151512993 is a `hidden beast` number, since 1 + 51 + 512 + 9 + 93 = 666.

151512993 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 141419664 + 10093329 = 11892^2 + 3177^2 .

It is not a de Polignac number, because 151512993 - 2² = 151512989 is a prime.

It is not an unprimeable number, because it can be changed into a prime (151512923) 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, 494988 + ... + 495293.

It is an arithmetic number, because the mean of its divisors is an integer number (19310499).

Almost surely, 2^151512993 is an apocalyptic number.

It is an amenable number.

151512993 is a deficient number, since it is larger than the sum of its proper divisors (80212995).

151512993 is a wasteful number, since it uses less digits than its factorization.

151512993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 990304 (or 990301 counting only the distinct ones).

The product of its digits is 12150, while the sum is 36.

The square root of 151512993 is about 12309.0614183211. The cubic root of 151512993 is about 533.1097505106.

The spelling of 151512993 in words is "one hundred fifty-one million, five hundred twelve thousand, nine hundred ninety-three".