381366884 has 6 divisors (see below), whose sum is σ = 667392054. Its totient is φ = 190683440.

The previous prime is 381366877. The next prime is 381366889. The reversal of 381366884 is 488663183.

381366884 is digitally balanced in base 3 and base 9, because in such bases it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 271326784 + 110040100 = 16472^2 + 10490^2 .

381366884 is strictly pandigital in base 9.

It is not an unprimeable number, because it can be changed into a prime (381366889) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 47670857 + ... + 47670864.

It is an arithmetic number, because the mean of its divisors is an integer number (111232009).

Almost surely, 2^381366884 is an apocalyptic number.

It is an amenable number.

381366884 is a deficient number, since it is larger than the sum of its proper divisors (286025170).

381366884 is a wasteful number, since it uses less digits than its factorization.

381366884 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95341725 (or 95341723 counting only the distinct ones).

The product of its digits is 663552, while the sum is 47.

The square root of 381366884 is about 19528.6170529303. The cubic root of 381366884 is about 725.1830748130.

The spelling of 381366884 in words is "three hundred eighty-one million, three hundred sixty-six thousand, eight hundred eighty-four".