2151900667 has 4 divisors (see below), whose sum is σ = 2459315056. Its totient is φ = 1844486280.

The previous prime is 2151900637. The next prime is 2151900701. The reversal of 2151900667 is 7660091512.

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

It is a de Polignac number, because none of the positive numbers 2^k-2151900667 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2151900637) 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, 153707184 + ... + 153707197.

It is an arithmetic number, because the mean of its divisors is an integer number (614828764).

Almost surely, 2^2151900667 is an apocalyptic number.

2151900667 is a deficient number, since it is larger than the sum of its proper divisors (307414389).

2151900667 is an equidigital number, since it uses as much as digits as its factorization.

2151900667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 307414388.

The product of its (nonzero) digits is 22680, while the sum is 37.

The square root of 2151900667 is about 46388.5833691869. The cubic root of 2151900667 is about 1291.0430973906.

The spelling of 2151900667 in words is "two billion, one hundred fifty-one million, nine hundred thousand, six hundred sixty-seven".