2251247394 has 16 divisors (see below), whose sum is σ = 4911812640. Its totient is φ = 682196160.

The previous prime is 2251247377. The next prime is 2251247417. The reversal of 2251247394 is 4937421522.

It is a super-2 number, since 2×2251247394² = 10136229657983582472, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17054839 + ... + 17054970.

It is an arithmetic number, because the mean of its divisors is an integer number (306988290).

Almost surely, 2^2251247394 is an apocalyptic number.

2251247394 is an abundant number, since it is smaller than the sum of its proper divisors (2660565246).

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

2251247394 is a wasteful number, since it uses less digits than its factorization.

2251247394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34109825.

The product of its digits is 120960, while the sum is 39.

The square root of 2251247394 is about 47447.3117678968. The cubic root of 2251247394 is about 1310.6128077082.

The spelling of 2251247394 in words is "two billion, two hundred fifty-one million, two hundred forty-seven thousand, three hundred ninety-four".