16364631 has 4 divisors (see below), whose sum is σ = 21819512. Its totient is φ = 10909752.

The previous prime is 16364627. The next prime is 16364641. The reversal of 16364631 is 13646361.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13646361 = 3 ⋅4548787.

It is not a de Polignac number, because 16364631 - 2² = 16364627 is a prime.

It is a super-2 number, since 2×16364631² = 535602295532322, 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 (16364611) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2727436 + ... + 2727441.

It is an arithmetic number, because the mean of its divisors is an integer number (5454878).

Almost surely, 2^16364631 is an apocalyptic number.

16364631 is a deficient number, since it is larger than the sum of its proper divisors (5454881).

16364631 is an equidigital number, since it uses as much as digits as its factorization.

16364631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5454880.

The product of its digits is 7776, while the sum is 30.

The square root of 16364631 is about 4045.3221132562. The cubic root of 16364631 is about 253.8840430058.

The spelling of 16364631 in words is "sixteen million, three hundred sixty-four thousand, six hundred thirty-one".