64161538 has 8 divisors (see below), whose sum is σ = 109991232. Its totient is φ = 27497796.

The previous prime is 64161529. The next prime is 64161541. The reversal of 64161538 is 83516146.

It is a happy number.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2291470 + ... + 2291497.

It is an arithmetic number, because the mean of its divisors is an integer number (13748904).

Almost surely, 2^64161538 is an apocalyptic number.

64161538 is a deficient number, since it is larger than the sum of its proper divisors (45829694).

64161538 is a wasteful number, since it uses less digits than its factorization.

64161538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4582976.

The product of its digits is 17280, while the sum is 34.

The square root of 64161538 is about 8010.0897622936. The cubic root of 64161538 is about 400.3362547526.

The spelling of 64161538 in words is "sixty-four million, one hundred sixty-one thousand, five hundred thirty-eight".