16501379 has 4 divisors (see below), whose sum is σ = 16885176. Its totient is φ = 16117584.

The previous prime is 16501369. The next prime is 16501399. The reversal of 16501379 is 97310561.

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

It is a cyclic number.

It is not a de Polignac number, because 16501379 - 2⁸ = 16501123 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16501369) 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, 191834 + ... + 191919.

It is an arithmetic number, because the mean of its divisors is an integer number (4221294).

Almost surely, 2^16501379 is an apocalyptic number.

16501379 is a deficient number, since it is larger than the sum of its proper divisors (383797).

16501379 is an equidigital number, since it uses as much as digits as its factorization.

16501379 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 383796.

The product of its (nonzero) digits is 5670, while the sum is 32.

The square root of 16501379 is about 4062.1889419376. The cubic root of 16501379 is about 254.5892605846.

The spelling of 16501379 in words is "sixteen million, five hundred one thousand, three hundred seventy-nine".