2113235778 has 16 divisors (see below), whose sum is σ = 4242070656. Its totient is φ = 701812080.

The previous prime is 2113235767. The next prime is 2113235783. The reversal of 2113235778 is 8775323112.

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 in 7 ways as a sum of consecutive naturals, for example, 648201 + ... + 651452.

It is an arithmetic number, because the mean of its divisors is an integer number (265129416).

Almost surely, 2^2113235778 is an apocalyptic number.

2113235778 is an abundant number, since it is smaller than the sum of its proper divisors (2128834878).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2113235778 is a wasteful number, since it uses less digits than its factorization.

2113235778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1299929.

The product of its digits is 70560, while the sum is 39.

The square root of 2113235778 is about 45969.9442897204. The cubic root of 2113235778 is about 1283.2639231289.

The spelling of 2113235778 in words is "two billion, one hundred thirteen million, two hundred thirty-five thousand, seven hundred seventy-eight".