8157233481 has 4 divisors (see below), whose sum is σ = 10876311312. Its totient is φ = 5438155652.

The previous prime is 8157233459. The next prime is 8157233519. The reversal of 8157233481 is 1843327518.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 8157233481 - 2⁷ = 8157233353 is a prime.

It is a super-2 number, since 2×8157233481² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (8157233411) 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, 1359538911 + ... + 1359538916.

It is an arithmetic number, because the mean of its divisors is an integer number (2719077828).

Almost surely, 2^8157233481 is an apocalyptic number.

It is an amenable number.

8157233481 is a deficient number, since it is larger than the sum of its proper divisors (2719077831).

8157233481 is a wasteful number, since it uses less digits than its factorization.

8157233481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2719077830.

The product of its digits is 161280, while the sum is 42.

The square root of 8157233481 is about 90317.4040869200. The cubic root of 8157233481 is about 2013.0178737256.

The spelling of 8157233481 in words is "eight billion, one hundred fifty-seven million, two hundred thirty-three thousand, four hundred eighty-one".