64492138 has 8 divisors (see below), whose sum is σ = 100944288. Its totient is φ = 30844044.

The previous prime is 64492093. The next prime is 64492157. The reversal of 64492138 is 83129446.

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

It is a super-2 number, since 2×64492138² = 8318471727622088, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 64492097 and 64492106.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 700956 + ... + 701047.

It is an arithmetic number, because the mean of its divisors is an integer number (12618036).

Almost surely, 2^64492138 is an apocalyptic number.

64492138 is a deficient number, since it is larger than the sum of its proper divisors (36452150).

64492138 is a wasteful number, since it uses less digits than its factorization.

64492138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1402028.

The product of its digits is 41472, while the sum is 37.

The square root of 64492138 is about 8030.6997204478. The cubic root of 64492138 is about 401.0226706337.

The spelling of 64492138 in words is "sixty-four million, four hundred ninety-two thousand, one hundred thirty-eight".