364641861 has 4 divisors (see below), whose sum is σ = 486189152. Its totient is φ = 243094572.

The previous prime is 364641817. The next prime is 364641881. The reversal of 364641861 is 168146463.

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 not a de Polignac number, because 364641861 - 2¹⁴ = 364625477 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (364641881) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 60773641 + ... + 60773646.

It is an arithmetic number, because the mean of its divisors is an integer number (121547288).

Almost surely, 2^364641861 is an apocalyptic number.

It is an amenable number.

364641861 is a deficient number, since it is larger than the sum of its proper divisors (121547291).

364641861 is a wasteful number, since it uses less digits than its factorization.

364641861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121547290.

The product of its digits is 82944, while the sum is 39.

The square root of 364641861 is about 19095.5979482183. The cubic root of 364641861 is about 714.4231322716.

The spelling of 364641861 in words is "three hundred sixty-four million, six hundred forty-one thousand, eight hundred sixty-one".