64138151 has 8 divisors (see below), whose sum is σ = 79964544. Its totient is φ = 49977720.

The previous prime is 64138147. The next prime is 64138157. The reversal of 64138151 is 15183146.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 64138151 - 2² = 64138147 is a prime.

It is a super-2 number, since 2×64138151² = 8227404827397602, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64138157) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 416405 + ... + 416558.

It is an arithmetic number, because the mean of its divisors is an integer number (9995568).

Almost surely, 2^64138151 is an apocalyptic number.

64138151 is a deficient number, since it is larger than the sum of its proper divisors (15826393).

64138151 is a wasteful number, since it uses less digits than its factorization.

64138151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 832981.

The product of its digits is 2880, while the sum is 29.

The square root of 64138151 is about 8008.6297829279. The cubic root of 64138151 is about 400.2876077382.

The spelling of 64138151 in words is "sixty-four million, one hundred thirty-eight thousand, one hundred fifty-one".