364891881 has 4 divisors (see below), whose sum is σ = 486522512. Its totient is φ = 243261252.

The previous prime is 364891873. The next prime is 364891889. The reversal of 364891881 is 188198463.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (364891873) and next prime (364891889).

It is not a de Polignac number, because 364891881 - 2³ = 364891873 is a prime.

It is a super-2 number, since 2×364891881² = 266292169639436322, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 364891881.

It is not an unprimeable number, because it can be changed into a prime (364891889) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 60815311 + ... + 60815316.

It is an arithmetic number, because the mean of its divisors is an integer number (121630628).

Almost surely, 2^364891881 is an apocalyptic number.

It is an amenable number.

364891881 is a deficient number, since it is larger than the sum of its proper divisors (121630631).

364891881 is a wasteful number, since it uses less digits than its factorization.

364891881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121630630.

The product of its digits is 331776, while the sum is 48.

The square root of 364891881 is about 19102.1433614137. The cubic root of 364891881 is about 714.5863785341.

The spelling of 364891881 in words is "three hundred sixty-four million, eight hundred ninety-one thousand, eight hundred eighty-one".