2115959798 has 4 divisors (see below), whose sum is σ = 3173939700. Its totient is φ = 1057979898.

The previous prime is 2115959789. The next prime is 2115959803. The reversal of 2115959798 is 8979595112.

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

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 528989948 + ... + 528989951.

It is an arithmetic number, because the mean of its divisors is an integer number (793484925).

Almost surely, 2^2115959798 is an apocalyptic number.

2115959798 is a deficient number, since it is larger than the sum of its proper divisors (1057979902).

2115959798 is a wasteful number, since it uses less digits than its factorization.

2115959798 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1057979901.

The product of its digits is 2041200, while the sum is 56.

The square root of 2115959798 is about 45999.5630196636. The cubic root of 2115959798 is about 1283.8150740719.

The spelling of 2115959798 in words is "two billion, one hundred fifteen million, nine hundred fifty-nine thousand, seven hundred ninety-eight".