2225978690 has 16 divisors (see below), whose sum is σ = 4314974328. Its totient is φ = 821899776.

The previous prime is 2225978681. The next prime is 2225978761. The reversal of 2225978690 is 968795222.

It can be written as a sum of positive squares in 4 ways, for example, as 1922208649 + 303770041 = 43843^2 + 17429^2 .

It is a super-2 number, since 2×2225978690² = 9909962256668232200, 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, 8561327 + ... + 8561586.

Almost surely, 2^2225978690 is an apocalyptic number.

2225978690 is a deficient number, since it is larger than the sum of its proper divisors (2088995638).

2225978690 is a wasteful number, since it uses less digits than its factorization.

2225978690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17122933.

The product of its (nonzero) digits is 1088640, while the sum is 50.

The square root of 2225978690 is about 47180.2786129968. The cubic root of 2225978690 is about 1305.6907701640.

The spelling of 2225978690 in words is "two billion, two hundred twenty-five million, nine hundred seventy-eight thousand, six hundred ninety".