8158501492 has 6 divisors (see below), whose sum is σ = 14277377618. Its totient is φ = 4079250744.

The previous prime is 8158501489. The next prime is 8158501513. The reversal of 8158501492 is 2941058518.

It can be written as a sum of positive squares in only one way, i.e., 6798662116 + 1359839376 = 82454^2 + 36876^2 .

It is a super-2 number, since 2×8158501492² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1019812683 + ... + 1019812690.

Almost surely, 2^8158501492 is an apocalyptic number.

It is an amenable number.

8158501492 is a deficient number, since it is larger than the sum of its proper divisors (6118876126).

8158501492 is a wasteful number, since it uses less digits than its factorization.

8158501492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2039625377 (or 2039625375 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 43.

The square root of 8158501492 is about 90324.4235630652. The cubic root of 8158501492 is about 2013.1221736522.

The spelling of 8158501492 in words is "eight billion, one hundred fifty-eight million, five hundred one thousand, four hundred ninety-two".