381959972 has 6 divisors (see below), whose sum is σ = 668429958. Its totient is φ = 190979984.

The previous prime is 381959971. The next prime is 381959987. The reversal of 381959972 is 279959183.

It can be written as a sum of positive squares in only one way, i.e., 380094016 + 1865956 = 19496^2 + 1366^2 .

It is not an unprimeable number, because it can be changed into a prime (381959971) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 47744993 + ... + 47745000.

It is an arithmetic number, because the mean of its divisors is an integer number (111404993).

Almost surely, 2^381959972 is an apocalyptic number.

It is an amenable number.

381959972 is a deficient number, since it is larger than the sum of its proper divisors (286469986).

381959972 is a wasteful number, since it uses less digits than its factorization.

381959972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95489997 (or 95489995 counting only the distinct ones).

The product of its digits is 1224720, while the sum is 53.

The square root of 381959972 is about 19543.7962535430. The cubic root of 381959972 is about 725.5588062784.

The spelling of 381959972 in words is "three hundred eighty-one million, nine hundred fifty-nine thousand, nine hundred seventy-two".