16464331 has 4 divisors (see below), whose sum is σ = 17730832. Its totient is φ = 15197832.

The previous prime is 16464323. The next prime is 16464353. The reversal of 16464331 is 13346461.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 16464331 - 2³ = 16464323 is a prime.

It is a super-2 number, since 2×16464331² = 542148390555122, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 16464331.

It is not an unprimeable number, because it can be changed into a prime (16464031) 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, 633231 + ... + 633256.

It is an arithmetic number, because the mean of its divisors is an integer number (4432708).

Almost surely, 2^16464331 is an apocalyptic number.

16464331 is a deficient number, since it is larger than the sum of its proper divisors (1266501).

16464331 is a wasteful number, since it uses less digits than its factorization.

16464331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1266500.

The product of its digits is 5184, while the sum is 28.

The square root of 16464331 is about 4057.6262765316. The cubic root of 16464331 is about 254.3985878233.

The spelling of 16464331 in words is "sixteen million, four hundred sixty-four thousand, three hundred thirty-one".