1149515987 has 2 divisors, whose sum is σ = 1149515988. Its totient is φ = 1149515986.

The previous prime is 1149515959. The next prime is 1149515999. The reversal of 1149515987 is 7895159411.

It is a strong prime.

It is an emirp because it is prime and its reverse (7895159411) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1149515987 is a prime.

It is not a weakly prime, because it can be changed into another prime (1149515957) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 574757993 + 574757994.

It is an arithmetic number, because the mean of its divisors is an integer number (574757994).

Almost surely, 2^1149515987 is an apocalyptic number.

1149515987 is a deficient number, since it is larger than the sum of its proper divisors (1).

1149515987 is an equidigital number, since it uses as much as digits as its factorization.

1149515987 is an evil number, because the sum of its binary digits is even.

The product of its digits is 453600, while the sum is 50.

The square root of 1149515987 is about 33904.5127822241. The cubic root of 1149515987 is about 1047.5425483825.

The spelling of 1149515987 in words is "one billion, one hundred forty-nine million, five hundred fifteen thousand, nine hundred eighty-seven".