101664138 has 32 divisors (see below), whose sum is σ = 205979904. Its totient is φ = 33449472.

The previous prime is 101664137. The next prime is 101664161. The reversal of 101664138 is 831466101.

It is not an unprimeable number, because it can be changed into a prime (101664137) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 276831 + ... + 277197.

It is an arithmetic number, because the mean of its divisors is an integer number (6436872).

Almost surely, 2^101664138 is an apocalyptic number.

101664138 is an abundant number, since it is smaller than the sum of its proper divisors (104315766).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

101664138 is a wasteful number, since it uses less digits than its factorization.

101664138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 846.

The product of its (nonzero) digits is 3456, while the sum is 30.

The square root of 101664138 is about 10082.8635813443. The cubic root of 101664138 is about 466.7194796238.

The spelling of 101664138 in words is "one hundred one million, six hundred sixty-four thousand, one hundred thirty-eight".