2318187961 has 4 divisors (see below), whose sum is σ = 2318845072. Its totient is φ = 2317530852.

The previous prime is 2318187953. The next prime is 2318188001. The reversal of 2318187961 is 1697818132.

It is a happy number.

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.

It is a cyclic number.

It is not a de Polignac number, because 2318187961 - 2³ = 2318187953 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2318187901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 323235 + ... + 330328.

It is an arithmetic number, because the mean of its divisors is an integer number (579711268).

Almost surely, 2^2318187961 is an apocalyptic number.

It is an amenable number.

2318187961 is a deficient number, since it is larger than the sum of its proper divisors (657111).

2318187961 is an equidigital number, since it uses as much as digits as its factorization.

2318187961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 657110.

The product of its digits is 145152, while the sum is 46.

The square root of 2318187961 is about 48147.5644347666. The cubic root of 2318187961 is about 1323.4764424173.

The spelling of 2318187961 in words is "two billion, three hundred eighteen million, one hundred eighty-seven thousand, nine hundred sixty-one".