16045631 has 8 divisors (see below), whose sum is σ = 18929664. Its totient is φ = 13309560.

The previous prime is 16045621. The next prime is 16045663. The reversal of 16045631 is 13654061.

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

It is a cyclic number.

It is not a de Polignac number, because 16045631 - 2¹⁸ = 15783487 is a prime.

It is a super-2 number, since 2×16045631² = 514924548376322, 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 16045631.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16045621) 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, 36755 + ... + 37188.

It is an arithmetic number, because the mean of its divisors is an integer number (2366208).

Almost surely, 2^16045631 is an apocalyptic number.

16045631 is a deficient number, since it is larger than the sum of its proper divisors (2884033).

16045631 is an equidigital number, since it uses as much as digits as its factorization.

16045631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73981.

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 16045631 is about 4005.6998140150. The cubic root of 16045631 is about 252.2235303533.

Adding to 16045631 its reverse (13654061), we get a palindrome (29699692).

The spelling of 16045631 in words is "sixteen million, forty-five thousand, six hundred thirty-one".