863794157 has 8 divisors (see below), whose sum is σ = 914897592. Its totient is φ = 812723200.

The previous prime is 863794147. The next prime is 863794189. The reversal of 863794157 is 751497368.

It can be written as a sum of positive squares in 4 ways, for example, as 734084836 + 129709321 = 27094^2 + 11389^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 863794157 - 2⁸ = 863793901 is a prime.

It is a super-2 number, since 2×863794157² = 1492280691334681298, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (863794147) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 66107 + ... + 78087.

It is an arithmetic number, because the mean of its divisors is an integer number (114362199).

Almost surely, 2^863794157 is an apocalyptic number.

It is an amenable number.

863794157 is a deficient number, since it is larger than the sum of its proper divisors (51103435).

863794157 is a wasteful number, since it uses less digits than its factorization.

863794157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16239.

The product of its digits is 1270080, while the sum is 50.

The square root of 863794157 is about 29390.3752442870. The cubic root of 863794157 is about 952.3649873505.

The spelling of 863794157 in words is "eight hundred sixty-three million, seven hundred ninety-four thousand, one hundred fifty-seven".