381422155 has 16 divisors (see below), whose sum is σ = 470292480. Its totient is φ = 296826592.

The previous prime is 381422143. The next prime is 381422161. The reversal of 381422155 is 551224183.

It is a cyclic number.

It is not a de Polignac number, because 381422155 - 2¹¹ = 381420107 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34386 + ... + 44104.

It is an arithmetic number, because the mean of its divisors is an integer number (29393280).

Almost surely, 2^381422155 is an apocalyptic number.

381422155 is a deficient number, since it is larger than the sum of its proper divisors (88870325).

381422155 is a wasteful number, since it uses less digits than its factorization.

381422155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9938.

The product of its digits is 9600, while the sum is 31.

The square root of 381422155 is about 19530.0321300299. The cubic root of 381422155 is about 725.2181063965.

The spelling of 381422155 in words is "three hundred eighty-one million, four hundred twenty-two thousand, one hundred fifty-five".