16119631 has 4 divisors (see below), whose sum is σ = 17585064. Its totient is φ = 14654200.

The previous prime is 16119629. The next prime is 16119643. The reversal of 16119631 is 13691161.

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

It is not a de Polignac number, because 16119631 - 2¹ = 16119629 is a prime.

It is a super-2 number, since 2×16119631² = 519685007152322, 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 16119631.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16119611) 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, 732700 + ... + 732721.

It is an arithmetic number, because the mean of its divisors is an integer number (4396266).

Almost surely, 2^16119631 is an apocalyptic number.

16119631 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

16119631 is a deficient number, since it is larger than the sum of its proper divisors (1465433).

16119631 is a wasteful number, since it uses less digits than its factorization.

16119631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1465432.

The product of its digits is 972, while the sum is 28.

The square root of 16119631 is about 4014.9260267158. The cubic root of 16119631 is about 252.6106746143.

The spelling of 16119631 in words is "sixteen million, one hundred nineteen thousand, six hundred thirty-one".