9149872087 has 2 divisors, whose sum is σ = 9149872088. Its totient is φ = 9149872086.

The previous prime is 9149872037. The next prime is 9149872103. The reversal of 9149872087 is 7802789419.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (7802789419) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9149872087 - 2³¹ = 7002388439 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9149872037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4574936043 + 4574936044.

It is an arithmetic number, because the mean of its divisors is an integer number (4574936044).

Almost surely, 2^9149872087 is an apocalyptic number.

9149872087 is a deficient number, since it is larger than the sum of its proper divisors (1).

9149872087 is an equidigital number, since it uses as much as digits as its factorization.

9149872087 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2032128, while the sum is 55.

The square root of 9149872087 is about 95654.9637342464. The cubic root of 9149872087 is about 2091.5664856075.

The spelling of 9149872087 in words is "nine billion, one hundred forty-nine million, eight hundred seventy-two thousand, eighty-seven".