2798113658 has 4 divisors (see below), whose sum is σ = 4197170490. Its totient is φ = 1399056828.

The previous prime is 2798113649. The next prime is 2798113687. The reversal of 2798113658 is 8563118972.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 2598654529 + 199459129 = 50977^2 + 14123^2 .

It is a super-2 number, since 2×2798113658² = 15658880086172281928, which contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 699528413 + ... + 699528416.

Almost surely, 2^2798113658 is an apocalyptic number.

2798113658 is a deficient number, since it is larger than the sum of its proper divisors (1399056832).

2798113658 is a wasteful number, since it uses less digits than its factorization.

2798113658 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1399056831.

The product of its digits is 725760, while the sum is 50.

The square root of 2798113658 is about 52897.1989617598. The cubic root of 2798113658 is about 1409.1431606516.

The spelling of 2798113658 in words is "two billion, seven hundred ninety-eight million, one hundred thirteen thousand, six hundred fifty-eight".