381089475 has 96 divisors (see below), whose sum is σ = 761826240. Its totient is φ = 185656320.

The previous prime is 381089473. The next prime is 381089483. The reversal of 381089475 is 574980183.

It is not a de Polignac number, because 381089475 - 2¹ = 381089473 is a prime.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 381089475.

It is not an unprimeable number, because it can be changed into a prime (381089473) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1202017 + ... + 1202333.

It is an arithmetic number, because the mean of its divisors is an integer number (7935690).

Almost surely, 2^381089475 is an apocalyptic number.

381089475 is a deficient number, since it is larger than the sum of its proper divisors (380736765).

381089475 is a wasteful number, since it uses less digits than its factorization.

381089475 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 486 (or 475 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 45.

The square root of 381089475 is about 19521.5131329516. The cubic root of 381089475 is about 725.0071977090.

The spelling of 381089475 in words is "three hundred eighty-one million, eighty-nine thousand, four hundred seventy-five".