2151318479 has 2 divisors, whose sum is σ = 2151318480. Its totient is φ = 2151318478.

The previous prime is 2151318469. The next prime is 2151318487. The reversal of 2151318479 is 9748131512.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2151318479 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2151318469) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1075659239 + 1075659240.

It is an arithmetic number, because the mean of its divisors is an integer number (1075659240).

Almost surely, 2^2151318479 is an apocalyptic number.

2151318479 is a deficient number, since it is larger than the sum of its proper divisors (1).

2151318479 is an equidigital number, since it uses as much as digits as its factorization.

2151318479 is an evil number, because the sum of its binary digits is even.

The product of its digits is 60480, while the sum is 41.

The square root of 2151318479 is about 46382.3078231345. The cubic root of 2151318479 is about 1290.9266580642.

The spelling of 2151318479 in words is "two billion, one hundred fifty-one million, three hundred eighteen thousand, four hundred seventy-nine".