5157644894 has 8 divisors (see below), whose sum is σ = 7737526920. Its totient is φ = 2578469256.

The previous prime is 5157644873. The next prime is 5157644903. The reversal of 5157644894 is 4984467515.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 157949 + ... + 187784.

It is an arithmetic number, because the mean of its divisors is an integer number (967190865).

Almost surely, 2^5157644894 is an apocalyptic number.

5157644894 is a deficient number, since it is larger than the sum of its proper divisors (2579882026).

5157644894 is a wasteful number, since it uses less digits than its factorization.

5157644894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 353194.

The product of its digits is 4838400, while the sum is 53.

The square root of 5157644894 is about 71816.7452200390. The cubic root of 5157644894 is about 1727.7615802512.

The spelling of 5157644894 in words is "five billion, one hundred fifty-seven million, six hundred forty-four thousand, eight hundred ninety-four".