2136256718 has 4 divisors (see below), whose sum is σ = 3204385080. Its totient is φ = 1068128358.

The previous prime is 2136256691. The next prime is 2136256723. The reversal of 2136256718 is 8176526312.

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 polite number, since it can be written as a sum of consecutive naturals, namely, 534064178 + ... + 534064181.

It is an arithmetic number, because the mean of its divisors is an integer number (801096270).

Almost surely, 2^2136256718 is an apocalyptic number.

2136256718 is a deficient number, since it is larger than the sum of its proper divisors (1068128362).

2136256718 is a wasteful number, since it uses less digits than its factorization.

2136256718 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1068128361.

The product of its digits is 120960, while the sum is 41.

The square root of 2136256718 is about 46219.6572683096. The cubic root of 2136256718 is about 1287.9069312630.

The spelling of 2136256718 in words is "two billion, one hundred thirty-six million, two hundred fifty-six thousand, seven hundred eighteen".