16129913 has 4 divisors (see below), whose sum is σ = 16139088. Its totient is φ = 16120740.

The previous prime is 16129909. The next prime is 16129921. The reversal of 16129913 is 31992161.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 16129913 - 2² = 16129909 is a prime.

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 16129913.

It is not an unprimeable number, because it can be changed into a prime (16129963) 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, 1031 + ... + 5772.

It is an arithmetic number, because the mean of its divisors is an integer number (4034772).

Almost surely, 2^16129913 is an apocalyptic number.

It is an amenable number.

16129913 is a deficient number, since it is larger than the sum of its proper divisors (9175).

16129913 is an equidigital number, since it uses as much as digits as its factorization.

16129913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9174.

The product of its digits is 2916, while the sum is 32.

The square root of 16129913 is about 4016.2062945023. The cubic root of 16129913 is about 252.6643729259.

The spelling of 16129913 in words is "sixteen million, one hundred twenty-nine thousand, nine hundred thirteen".