1149512491 has 2 divisors, whose sum is σ = 1149512492. Its totient is φ = 1149512490.

The previous prime is 1149512479. The next prime is 1149512503. The reversal of 1149512491 is 1942159411.

It is a balanced prime because it is at equal distance from previous prime (1149512479) and next prime (1149512503).

It is an emirp because it is prime and its reverse (1942159411) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1149512491 - 2⁵ = 1149512459 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1149512491.

It is not a weakly prime, because it can be changed into another prime (1149512431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 574756245 + 574756246.

It is an arithmetic number, because the mean of its divisors is an integer number (574756246).

Almost surely, 2^1149512491 is an apocalyptic number.

1149512491 is a deficient number, since it is larger than the sum of its proper divisors (1).

1149512491 is an equidigital number, since it uses as much as digits as its factorization.

1149512491 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12960, while the sum is 37.

The square root of 1149512491 is about 33904.4612256263. The cubic root of 1149512491 is about 1047.5414864247.

The spelling of 1149512491 in words is "one billion, one hundred forty-nine million, five hundred twelve thousand, four hundred ninety-one".