5136492894 has 64 divisors (see below), whose sum is σ = 11595999744. Its totient is φ = 1504964736.

The previous prime is 5136492883. The next prime is 5136492923. The reversal of 5136492894 is 4982946315.

It is a super-2 number, since 2×5136492894² = 52767118500224990472, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 400932 + ... + 413544.

It is an arithmetic number, because the mean of its divisors is an integer number (181187496).

Almost surely, 2^5136492894 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 5136492894, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5797999872).

5136492894 is an abundant number, since it is smaller than the sum of its proper divisors (6459506850).

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

5136492894 is a wasteful number, since it uses less digits than its factorization.

5136492894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12881.

The product of its digits is 1866240, while the sum is 51.

The square root of 5136492894 is about 71669.3302187205. The cubic root of 5136492894 is about 1725.3964383524.

The spelling of 5136492894 in words is "five billion, one hundred thirty-six million, four hundred ninety-two thousand, eight hundred ninety-four".