2208974257 has 16 divisors (see below), whose sum is σ = 2772956160. Its totient is φ = 1715761872.

The previous prime is 2208974249. The next prime is 2208974263. The reversal of 2208974257 is 7524798022.

It is a cyclic number.

It is not a de Polignac number, because 2208974257 - 2³ = 2208974249 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2208974267) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 358003 + ... + 364120.

It is an arithmetic number, because the mean of its divisors is an integer number (173309760).

Almost surely, 2^2208974257 is an apocalyptic number.

It is an amenable number.

2208974257 is a deficient number, since it is larger than the sum of its proper divisors (563981903).

2208974257 is a wasteful number, since it uses less digits than its factorization.

2208974257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 722172.

The product of its (nonzero) digits is 564480, while the sum is 46.

The square root of 2208974257 is about 46999.7261375000. The cubic root of 2208974257 is about 1302.3575085396.

The spelling of 2208974257 in words is "two billion, two hundred eight million, nine hundred seventy-four thousand, two hundred fifty-seven".