16381929 has 16 divisors (see below), whose sum is σ = 22410432. Its totient is φ = 10640448.

The previous prime is 16381891. The next prime is 16381961. The reversal of 16381929 is 92918361.

It is not a de Polignac number, because 16381929 - 2⁷ = 16381801 is a prime.

It is a super-2 number, since 2×16381929² = 536735195522082, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (16381979) 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, 31062 + ... + 31584.

It is an arithmetic number, because the mean of its divisors is an integer number (1400652).

Almost surely, 2^16381929 is an apocalyptic number.

It is an amenable number.

16381929 is a deficient number, since it is larger than the sum of its proper divisors (6028503).

16381929 is a wasteful number, since it uses less digits than its factorization.

16381929 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 776.

The product of its digits is 23328, while the sum is 39.

The square root of 16381929 is about 4047.4595736091. The cubic root of 16381929 is about 253.9734663419.

The spelling of 16381929 in words is "sixteen million, three hundred eighty-one thousand, nine hundred twenty-nine".