361991475 has 36 divisors (see below), whose sum is σ = 649552176. Its totient is φ = 192709440.

The previous prime is 361991467. The next prime is 361991479. The reversal of 361991475 is 574199163.

It is not a de Polignac number, because 361991475 - 2³ = 361991467 is a prime.

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 361991475.

It is not an unprimeable number, because it can be changed into a prime (361991479) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 162469 + ... + 164681.

It is an arithmetic number, because the mean of its divisors is an integer number (18043116).

Almost surely, 2^361991475 is an apocalyptic number.

361991475 is a deficient number, since it is larger than the sum of its proper divisors (287560701).

361991475 is a wasteful number, since it uses less digits than its factorization.

361991475 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2956 (or 2948 counting only the distinct ones).

The product of its digits is 204120, while the sum is 45.

The square root of 361991475 is about 19026.0735570953. The cubic root of 361991475 is about 712.6880020971.

The spelling of 361991475 in words is "three hundred sixty-one million, nine hundred ninety-one thousand, four hundred seventy-five".