381898964 has 6 divisors (see below), whose sum is σ = 668323194. Its totient is φ = 190949480.

The previous prime is 381898921. The next prime is 381898997. The reversal of 381898964 is 469898183.

It can be written as a sum of positive squares in only one way, i.e., 287031364 + 94867600 = 16942^2 + 9740^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 47737367 + ... + 47737374.

It is an arithmetic number, because the mean of its divisors is an integer number (111387199).

Almost surely, 2^381898964 is an apocalyptic number.

It is an amenable number.

381898964 is a deficient number, since it is larger than the sum of its proper divisors (286424230).

381898964 is a wasteful number, since it uses less digits than its factorization.

381898964 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95474745 (or 95474743 counting only the distinct ones).

The product of its digits is 2985984, while the sum is 56.

The square root of 381898964 is about 19542.2353890234. The cubic root of 381898964 is about 725.5201746138.

The spelling of 381898964 in words is "three hundred eighty-one million, eight hundred ninety-eight thousand, nine hundred sixty-four".