381108388 has 6 divisors (see below), whose sum is σ = 666939686. Its totient is φ = 190554192.

The previous prime is 381108379. The next prime is 381108421. The reversal of 381108388 is 883801183.

It can be written as a sum of positive squares in only one way, i.e., 360696064 + 20412324 = 18992^2 + 4518^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 381108388.

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, 47638545 + ... + 47638552.

Almost surely, 2^381108388 is an apocalyptic number.

It is an amenable number.

381108388 is a deficient number, since it is larger than the sum of its proper divisors (285831298).

381108388 is a wasteful number, since it uses less digits than its factorization.

381108388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95277101 (or 95277099 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 40.

The square root of 381108388 is about 19521.9975412354. The cubic root of 381108388 is about 725.0191912478.

The spelling of 381108388 in words is "three hundred eighty-one million, one hundred eight thousand, three hundred eighty-eight".