4857691838 has 4 divisors (see below), whose sum is σ = 7286537760. Its totient is φ = 2428845918.

The previous prime is 4857691831. The next prime is 4857691841. The reversal of 4857691838 is 8381967584.

It is a happy number.

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 (4857691831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1214422958 + ... + 1214422961.

It is an arithmetic number, because the mean of its divisors is an integer number (1821634440).

Almost surely, 2^4857691838 is an apocalyptic number.

4857691838 is a deficient number, since it is larger than the sum of its proper divisors (2428845922).

4857691838 is a wasteful number, since it uses less digits than its factorization.

4857691838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2428845921.

The product of its digits is 11612160, while the sum is 59.

The square root of 4857691838 is about 69697.1436860938. The cubic root of 4857691838 is about 1693.5966535225.

The spelling of 4857691838 in words is "four billion, eight hundred fifty-seven million, six hundred ninety-one thousand, eight hundred thirty-eight".