365638873 has 8 divisors (see below), whose sum is σ = 400497480. Its totient is φ = 332263680.

The previous prime is 365638859. The next prime is 365638877. The reversal of 365638873 is 378836563.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 110502144 + 255136729 = 10512^2 + 15973^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-365638873 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (365638877) 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, 370338 + ... + 371323.

It is an arithmetic number, because the mean of its divisors is an integer number (50062185).

Almost surely, 2^365638873 is an apocalyptic number.

It is an amenable number.

365638873 is a deficient number, since it is larger than the sum of its proper divisors (34858607).

365638873 is a wasteful number, since it uses less digits than its factorization.

365638873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 741707.

The product of its digits is 2177280, while the sum is 49.

The square root of 365638873 is about 19121.6859350843. The cubic root of 365638873 is about 715.0736703395.

The spelling of 365638873 in words is "three hundred sixty-five million, six hundred thirty-eight thousand, eight hundred seventy-three".