100925978 has 16 divisors (see below), whose sum is σ = 159606720. Its totient is φ = 47769216.

The previous prime is 100925971. The next prime is 100925999. The reversal of 100925978 is 879529001.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (100925971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6848 + ... + 15771.

It is an arithmetic number, because the mean of its divisors is an integer number (9975420).

Almost surely, 2^100925978 is an apocalyptic number.

100925978 is a deficient number, since it is larger than the sum of its proper divisors (58680742).

100925978 is a wasteful number, since it uses less digits than its factorization.

100925978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22741.

The product of its (nonzero) digits is 45360, while the sum is 41.

The square root of 100925978 is about 10046.1922139684. The cubic root of 100925978 is about 465.5871536165.

The spelling of 100925978 in words is "one hundred million, nine hundred twenty-five thousand, nine hundred seventy-eight".