1149951287 has 4 divisors (see below), whose sum is σ = 1166147856. Its totient is φ = 1133754720.

The previous prime is 1149951259. The next prime is 1149951301. The reversal of 1149951287 is 7821599411.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1149951287 - 2²⁴ = 1133174071 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1149951227) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8098178 + ... + 8098319.

It is an arithmetic number, because the mean of its divisors is an integer number (291536964).

Almost surely, 2^1149951287 is an apocalyptic number.

1149951287 is a deficient number, since it is larger than the sum of its proper divisors (16196569).

1149951287 is an equidigital number, since it uses as much as digits as its factorization.

1149951287 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16196568.

The product of its digits is 181440, while the sum is 47.

The square root of 1149951287 is about 33910.9316740192. The cubic root of 1149951287 is about 1047.6747598900.

The spelling of 1149951287 in words is "one billion, one hundred forty-nine million, nine hundred fifty-one thousand, two hundred eighty-seven".