365991369 has 8 divisors (see below), whose sum is σ = 488892672. Its totient is φ = 243542160.

The previous prime is 365991359. The next prime is 365991389. The reversal of 365991369 is 963199563.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 365991369 - 2⁹ = 365990857 is a prime.

It is a super-2 number, since 2×365991369² = 267899364364988322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (365991359) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 111129 + ... + 114374.

It is an arithmetic number, because the mean of its divisors is an integer number (61111584).

Almost surely, 2^365991369 is an apocalyptic number.

It is an amenable number.

365991369 is a deficient number, since it is larger than the sum of its proper divisors (122901303).

365991369 is a wasteful number, since it uses less digits than its factorization.

365991369 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 226047.

The product of its digits is 1180980, while the sum is 51.

The square root of 365991369 is about 19130.9008935805. The cubic root of 365991369 is about 715.3033866620.

The spelling of 365991369 in words is "three hundred sixty-five million, nine hundred ninety-one thousand, three hundred sixty-nine".