2551401318 has 16 divisors (see below), whose sum is σ = 5113829376. Its totient is φ = 848629320.

The previous prime is 2551401317. The next prime is 2551401323. The reversal of 2551401318 is 8131041552.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2551401313) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 456438 + ... + 461993.

It is an arithmetic number, because the mean of its divisors is an integer number (319614336).

Almost surely, 2^2551401318 is an apocalyptic number.

2551401318 is an abundant number, since it is smaller than the sum of its proper divisors (2562428058).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2551401318 is a wasteful number, since it uses less digits than its factorization.

2551401318 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 918899.

The product of its (nonzero) digits is 4800, while the sum is 30.

The square root of 2551401318 is about 50511.3979018597. The cubic root of 2551401318 is about 1366.4474206165.

The spelling of 2551401318 in words is "two billion, five hundred fifty-one million, four hundred one thousand, three hundred eighteen".