16131146 has 4 divisors (see below), whose sum is σ = 24196722. Its totient is φ = 8065572.

The previous prime is 16131127. The next prime is 16131169. The reversal of 16131146 is 64113161.

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

It can be written as a sum of positive squares in only one way, i.e., 10660225 + 5470921 = 3265^2 + 2339^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4032785 + ... + 4032788.

Almost surely, 2^16131146 is an apocalyptic number.

16131146 is a deficient number, since it is larger than the sum of its proper divisors (8065576).

16131146 is an equidigital number, since it uses as much as digits as its factorization.

16131146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8065575.

The product of its digits is 432, while the sum is 23.

The square root of 16131146 is about 4016.3597946399. The cubic root of 16131146 is about 252.6708108039.

The spelling of 16131146 in words is "sixteen million, one hundred thirty-one thousand, one hundred forty-six".