36801921 has 16 divisors (see below), whose sum is σ = 53089344. Its totient is φ = 22542144.

The previous prime is 36801883. The next prime is 36801931. The reversal of 36801921 is 12910863.

It is not a de Polignac number, because 36801921 - 2⁹ = 36801409 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (36801931) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6775 + ... + 10931.

It is an arithmetic number, because the mean of its divisors is an integer number (3318084).

Almost surely, 2^36801921 is an apocalyptic number.

It is an amenable number.

36801921 is a deficient number, since it is larger than the sum of its proper divisors (16287423).

36801921 is a wasteful number, since it uses less digits than its factorization.

36801921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4400.

The product of its (nonzero) digits is 2592, while the sum is 30.

The square root of 36801921 is about 6066.4586869112. The cubic root of 36801921 is about 332.6264873881.

The spelling of 36801921 in words is "thirty-six million, eight hundred one thousand, nine hundred twenty-one".