16291955 has 4 divisors (see below), whose sum is σ = 19550352. Its totient is φ = 13033560.

The previous prime is 16291937. The next prime is 16291993. The reversal of 16291955 is 55919261.

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

It is not a de Polignac number, because 16291955 - 2⁸ = 16291699 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1629191 + ... + 1629200.

It is an arithmetic number, because the mean of its divisors is an integer number (4887588).

Almost surely, 2^16291955 is an apocalyptic number.

16291955 is a deficient number, since it is larger than the sum of its proper divisors (3258397).

16291955 is an equidigital number, since it uses as much as digits as its factorization.

16291955 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3258396.

The product of its digits is 24300, while the sum is 38.

The square root of 16291955 is about 4036.3293968654. The cubic root of 16291955 is about 253.5076487648.

The spelling of 16291955 in words is "sixteen million, two hundred ninety-one thousand, nine hundred fifty-five".