2257978964 has 18 divisors (see below), whose sum is σ = 4197577230. Its totient is φ = 1062577792.

The previous prime is 2257978963. The next prime is 2257978969. The reversal of 2257978964 is 4698797522.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 992754064 + 1265224900 = 31508^2 + 35570^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2257978963) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 975479 + ... + 977790.

It is an arithmetic number, because the mean of its divisors is an integer number (233198735).

Almost surely, 2^2257978964 is an apocalyptic number.

It is an amenable number.

2257978964 is a deficient number, since it is larger than the sum of its proper divisors (1939598266).

2257978964 is a wasteful number, since it uses less digits than its factorization.

2257978964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1953307 (or 1953288 counting only the distinct ones).

The product of its digits is 15240960, while the sum is 59.

The square root of 2257978964 is about 47518.1961357962. The cubic root of 2257978964 is about 1311.9178179797.

The spelling of 2257978964 in words is "two billion, two hundred fifty-seven million, nine hundred seventy-eight thousand, nine hundred sixty-four".