2136317894 has 4 divisors (see below), whose sum is σ = 3204476844. Its totient is φ = 1068158946.

The previous prime is 2136317893. The next prime is 2136317899. The reversal of 2136317894 is 4987136312.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2136317893) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 534079472 + ... + 534079475.

It is an arithmetic number, because the mean of its divisors is an integer number (801119211).

Almost surely, 2^2136317894 is an apocalyptic number.

2136317894 is a deficient number, since it is larger than the sum of its proper divisors (1068158950).

2136317894 is a wasteful number, since it uses less digits than its factorization.

2136317894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1068158949.

The product of its digits is 217728, while the sum is 44.

The square root of 2136317894 is about 46220.3190599113. The cubic root of 2136317894 is about 1287.9192250792.

The spelling of 2136317894 in words is "two billion, one hundred thirty-six million, three hundred seventeen thousand, eight hundred ninety-four".