857748538 has 8 divisors (see below), whose sum is σ = 1292393088. Its totient is φ = 426950844.

The previous prime is 857748533. The next prime is 857748547. The reversal of 857748538 is 835847758.

It is a happy number.

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

It is a super-2 number, since 2×857748538² = 1471465108882274888, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (857748533) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 961156 + ... + 962047.

It is an arithmetic number, because the mean of its divisors is an integer number (161549136).

Almost surely, 2^857748538 is an apocalyptic number.

857748538 is a deficient number, since it is larger than the sum of its proper divisors (434644550).

857748538 is a wasteful number, since it uses less digits than its factorization.

857748538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1923428.

The product of its digits is 7526400, while the sum is 55.

The square root of 857748538 is about 29287.3443316392. The cubic root of 857748538 is about 950.1379441425.

The spelling of 857748538 in words is "eight hundred fifty-seven million, seven hundred forty-eight thousand, five hundred thirty-eight".