2298749661 has 24 divisors (see below), whose sum is σ = 3597022520. Its totient is φ = 1414603008.

The previous prime is 2298749647. The next prime is 2298749671. The reversal of 2298749661 is 1669478922.

2298749661 is a `hidden beast` number, since 2 + 2 + 98 + 7 + 496 + 61 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 1195845561 + 1102904100 = 34581^2 + 33210^2 .

It is not a de Polignac number, because 2298749661 - 2⁷ = 2298749533 is a prime.

It is a super-2 number, since 2×2298749661² = 10568500007895229842, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2298749598 and 2298749607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2298749671) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 38356 + ... + 77901.

Almost surely, 2^2298749661 is an apocalyptic number.

It is an amenable number.

2298749661 is a deficient number, since it is larger than the sum of its proper divisors (1298272859).

2298749661 is a wasteful number, since it uses less digits than its factorization.

2298749661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116302 (or 116273 counting only the distinct ones).

The product of its digits is 2612736, while the sum is 54.

The square root of 2298749661 is about 47945.2777758144. The cubic root of 2298749661 is about 1319.7668820421.

The spelling of 2298749661 in words is "two billion, two hundred ninety-eight million, seven hundred forty-nine thousand, six hundred sixty-one".