16131663 has 16 divisors (see below), whose sum is σ = 24351840. Its totient is φ = 10550592.

The previous prime is 16131653. The next prime is 16131677. The reversal of 16131663 is 36613161.

It is a happy number.

It is not a de Polignac number, because 16131663 - 2¹⁴ = 16115279 is a prime.

It is a super-2 number, since 2×16131663² = 520461102291138, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16131653) 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, 4206 + ... + 7067.

It is an arithmetic number, because the mean of its divisors is an integer number (1521990).

Almost surely, 2^16131663 is an apocalyptic number.

16131663 is a deficient number, since it is larger than the sum of its proper divisors (8220177).

16131663 is a wasteful number, since it uses less digits than its factorization.

16131663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11335 (or 11329 counting only the distinct ones).

The product of its digits is 1944, while the sum is 27.

The square root of 16131663 is about 4016.4241558879. The cubic root of 16131663 is about 252.6735101247.

The spelling of 16131663 in words is "sixteen million, one hundred thirty-one thousand, six hundred sixty-three".