64913138 has 16 divisors (see below), whose sum is σ = 98896896. Its totient is φ = 31950480.

The previous prime is 64913119. The next prime is 64913141. The reversal of 64913138 is 83131946.

It is a junction number, because it is equal to n+sod(n) for n = 64913098 and 64913107.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 63068 + ... + 64088.

It is an arithmetic number, because the mean of its divisors is an integer number (6181056).

Almost surely, 2^64913138 is an apocalyptic number.

64913138 is a deficient number, since it is larger than the sum of its proper divisors (33983758).

64913138 is a wasteful number, since it uses less digits than its factorization.

64913138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1489.

The product of its digits is 15552, while the sum is 35.

The square root of 64913138 is about 8056.8689948391. The cubic root of 64913138 is about 401.8933943370.

The spelling of 64913138 in words is "sixty-four million, nine hundred thirteen thousand, one hundred thirty-eight".