100919380 has 24 divisors (see below), whose sum is σ = 212244480. Its totient is φ = 40308000.

The previous prime is 100919369. The next prime is 100919381. The reversal of 100919380 is 83919001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100919381) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 11661 + ... + 18379.

It is an arithmetic number, because the mean of its divisors is an integer number (8843520).

Almost surely, 2^100919380 is an apocalyptic number.

100919380 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100919380 is an abundant number, since it is smaller than the sum of its proper divisors (111325100).

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

100919380 is a wasteful number, since it uses less digits than its factorization.

100919380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7479 (or 7477 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 31.

The square root of 100919380 is about 10045.8638254756. The cubic root of 100919380 is about 465.5770075304.

The spelling of 100919380 in words is "one hundred million, nine hundred nineteen thousand, three hundred eighty".