2251121746 has 8 divisors (see below), whose sum is σ = 3380359680. Its totient is φ = 1124335188.

The previous prime is 2251121731. The next prime is 2251121791. The reversal of 2251121746 is 6471211522.

It is a sphenic number, since it is the product of 3 distinct primes.

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 3 ways as a sum of consecutive naturals, for example, 610546 + ... + 614221.

It is an arithmetic number, because the mean of its divisors is an integer number (422544960).

Almost surely, 2^2251121746 is an apocalyptic number.

2251121746 is a deficient number, since it is larger than the sum of its proper divisors (1129237934).

2251121746 is a wasteful number, since it uses less digits than its factorization.

2251121746 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1225688.

The product of its digits is 6720, while the sum is 31.

The square root of 2251121746 is about 47445.9876701919. The cubic root of 2251121746 is about 1310.5884243460.

The spelling of 2251121746 in words is "two billion, two hundred fifty-one million, one hundred twenty-one thousand, seven hundred forty-six".