9157442089 has 2 divisors, whose sum is σ = 9157442090. Its totient is φ = 9157442088.

The previous prime is 9157442087. The next prime is 9157442137. The reversal of 9157442089 is 9802447519.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4734128025 + 4423314064 = 68805^2 + 66508^2 .

It is a cyclic number.

It is not a de Polignac number, because 9157442089 - 2¹ = 9157442087 is a prime.

It is a super-2 number, since 2×9157442089² (a number of 21 digits) contains 22 as substring.

Together with 9157442087, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (9157442087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4578721044 + 4578721045.

It is an arithmetic number, because the mean of its divisors is an integer number (4578721045).

Almost surely, 2^9157442089 is an apocalyptic number.

It is an amenable number.

9157442089 is a deficient number, since it is larger than the sum of its proper divisors (1).

9157442089 is an equidigital number, since it uses as much as digits as its factorization.

9157442089 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 725760, while the sum is 49.

The square root of 9157442089 is about 95694.5248642784. The cubic root of 9157442089 is about 2092.1431347634.

The spelling of 9157442089 in words is "nine billion, one hundred fifty-seven million, four hundred forty-two thousand, eighty-nine".