365985381 has 8 divisors (see below), whose sum is σ = 498363264. Its totient is φ = 238798880.

The previous prime is 365985379. The next prime is 365985383. The reversal of 365985381 is 183589563.

It is an interprime number because it is at equal distance from previous prime (365985379) and next prime (365985383).

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

It is a cyclic number.

It is not a de Polignac number, because 365985381 - 2¹ = 365985379 is a prime.

It is a super-2 number, since 2×365985381² = 267890598211430322, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 365985381.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (365985383) 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, 1297680 + ... + 1297961.

It is an arithmetic number, because the mean of its divisors is an integer number (62295408).

Almost surely, 2^365985381 is an apocalyptic number.

It is an amenable number.

365985381 is a deficient number, since it is larger than the sum of its proper divisors (132377883).

365985381 is a wasteful number, since it uses less digits than its factorization.

365985381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2595691.

The product of its digits is 777600, while the sum is 48.

The square root of 365985381 is about 19130.7443922081. The cubic root of 365985381 is about 715.2994856046.

The spelling of 365985381 in words is "three hundred sixty-five million, nine hundred eighty-five thousand, three hundred eighty-one".