2151318607 has 4 divisors (see below), whose sum is σ = 2154214800. Its totient is φ = 2148422416.

The previous prime is 2151318581. The next prime is 2151318619. The reversal of 2151318607 is 7068131512.

It is a happy number.

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 2151318607 - 2⁷ = 2151318479 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2151318677) 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, 1446982 + ... + 1448467.

It is an arithmetic number, because the mean of its divisors is an integer number (538553700).

Almost surely, 2^2151318607 is an apocalyptic number.

2151318607 is a deficient number, since it is larger than the sum of its proper divisors (2896193).

2151318607 is an equidigital number, since it uses as much as digits as its factorization.

2151318607 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2896192.

The product of its (nonzero) digits is 10080, while the sum is 34.

The square root of 2151318607 is about 46382.3092029709. The cubic root of 2151318607 is about 1290.9266836669.

The spelling of 2151318607 in words is "two billion, one hundred fifty-one million, three hundred eighteen thousand, six hundred seven".