2251631366 has 32 divisors (see below), whose sum is σ = 3591966720. Its totient is φ = 1058524200.

The previous prime is 2251631359. The next prime is 2251631407. The reversal of 2251631366 is 6631361522.

It is a hoax number, since the sum of its digits (35) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2070875 + ... + 2071961.

It is an arithmetic number, because the mean of its divisors is an integer number (112248960).

Almost surely, 2^2251631366 is an apocalyptic number.

2251631366 is a deficient number, since it is larger than the sum of its proper divisors (1340335354).

2251631366 is a wasteful number, since it uses less digits than its factorization.

2251631366 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1297 (or 1259 counting only the distinct ones).

The product of its digits is 38880, while the sum is 35.

The square root of 2251631366 is about 47451.3578941636. The cubic root of 2251631366 is about 1310.6873160325.

Adding to 2251631366 its reverse (6631361522), we get a palindrome (8882992888).

The spelling of 2251631366 in words is "two billion, two hundred fifty-one million, six hundred thirty-one thousand, three hundred sixty-six".