804238157 has 4 divisors (see below), whose sum is σ = 805725276. Its totient is φ = 802751040.

The previous prime is 804238139. The next prime is 804238187. The reversal of 804238157 is 751832408.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 607425316 + 196812841 = 24646^2 + 14029^2 .

It is a cyclic number.

It is not a de Polignac number, because 804238157 - 2¹⁴ = 804221773 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 804238157.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (804238117) 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, 742748 + ... + 743829.

It is an arithmetic number, because the mean of its divisors is an integer number (201431319).

Almost surely, 2^804238157 is an apocalyptic number.

It is an amenable number.

804238157 is a deficient number, since it is larger than the sum of its proper divisors (1487119).

804238157 is a wasteful number, since it uses less digits than its factorization.

804238157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1487118.

The product of its (nonzero) digits is 53760, while the sum is 38.

The square root of 804238157 is about 28359.0930214632. The cubic root of 804238157 is about 929.9541955319.

The spelling of 804238157 in words is "eight hundred four million, two hundred thirty-eight thousand, one hundred fifty-seven".