7852431157 has 2 divisors, whose sum is σ = 7852431158. Its totient is φ = 7852431156.

The previous prime is 7852431137. The next prime is 7852431163. The reversal of 7852431157 is 7511342587.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7787886001 + 64545156 = 88249^2 + 8034^2 .

It is a cyclic number.

It is not a de Polignac number, because 7852431157 - 2⁷ = 7852431029 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7852431137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3926215578 + 3926215579.

It is an arithmetic number, because the mean of its divisors is an integer number (3926215579).

Almost surely, 2^7852431157 is an apocalyptic number.

It is an amenable number.

7852431157 is a deficient number, since it is larger than the sum of its proper divisors (1).

7852431157 is an equidigital number, since it uses as much as digits as its factorization.

7852431157 is an evil number, because the sum of its binary digits is even.

The product of its digits is 235200, while the sum is 43.

The square root of 7852431157 is about 88613.9444839242. The cubic root of 7852431157 is about 1987.6261988192.

The spelling of 7852431157 in words is "seven billion, eight hundred fifty-two million, four hundred thirty-one thousand, one hundred fifty-seven".