369805381 has 4 divisors (see below), whose sum is σ = 403424064. Its totient is φ = 336186700.

The previous prime is 369805357. The next prime is 369805393. The reversal of 369805381 is 183508963.

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 a cyclic number.

It is not a de Polignac number, because 369805381 - 2²³ = 361416773 is a prime.

It is a super-2 number, since 2×369805381² = 273512039633110322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (369805321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16809325 + ... + 16809346.

It is an arithmetic number, because the mean of its divisors is an integer number (100856016).

Almost surely, 2^369805381 is an apocalyptic number.

It is an amenable number.

369805381 is a deficient number, since it is larger than the sum of its proper divisors (33618683).

369805381 is a wasteful number, since it uses less digits than its factorization.

369805381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33618682.

The product of its (nonzero) digits is 155520, while the sum is 43.

The square root of 369805381 is about 19230.3245162426. The cubic root of 369805381 is about 717.7795410247.

The spelling of 369805381 in words is "three hundred sixty-nine million, eight hundred five thousand, three hundred eighty-one".