1149451911 has 16 divisors (see below), whose sum is σ = 1792518400. Its totient is φ = 725969304.

The previous prime is 1149451909. The next prime is 1149451913. The reversal of 1149451911 is 1191549411.

1149451911 is a `hidden beast` number, since 114 + 9 + 451 + 91 + 1 = 666.

It is an interprime number because it is at equal distance from previous prime (1149451909) and next prime (1149451913).

It is not a de Polignac number, because 1149451911 - 2¹ = 1149451909 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 (1149451913) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1119811 + ... + 1120836.

It is an arithmetic number, because the mean of its divisors is an integer number (112032400).

Almost surely, 2^1149451911 is an apocalyptic number.

1149451911 is a deficient number, since it is larger than the sum of its proper divisors (643066489).

1149451911 is a wasteful number, since it uses less digits than its factorization.

1149451911 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2240675 (or 2240669 counting only the distinct ones).

The product of its digits is 6480, while the sum is 36.

The square root of 1149451911 is about 33903.5678211011. The cubic root of 1149451911 is about 1047.5230840792.

The spelling of 1149451911 in words is "one billion, one hundred forty-nine million, four hundred fifty-one thousand, nine hundred eleven".