100381964 has 6 divisors (see below), whose sum is σ = 175668444. Its totient is φ = 50190980.

The previous prime is 100381949. The next prime is 100381969. The reversal of 100381964 is 469183001.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 100381964.

It is not an unprimeable number, because it can be changed into a prime (100381969) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12547742 + ... + 12547749.

It is an arithmetic number, because the mean of its divisors is an integer number (29278074).

Almost surely, 2^100381964 is an apocalyptic number.

It is an amenable number.

100381964 is a deficient number, since it is larger than the sum of its proper divisors (75286480).

100381964 is a wasteful number, since it uses less digits than its factorization.

100381964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25095495 (or 25095493 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 32.

The square root of 100381964 is about 10019.0799976844. The cubic root of 100381964 is about 464.7491057979.

The spelling of 100381964 in words is "one hundred million, three hundred eighty-one thousand, nine hundred sixty-four".