1149248840 has 16 divisors (see below), whose sum is σ = 2585809980. Its totient is φ = 459699520.

The previous prime is 1149248827. The next prime is 1149248857. The reversal of 1149248840 is 488429411.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1147447876 + 1800964 = 33874^2 + 1342^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14365571 + ... + 14365650.

Almost surely, 2^1149248840 is an apocalyptic number.

1149248840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1149248840 is an abundant number, since it is smaller than the sum of its proper divisors (1436561140).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1149248840 is a wasteful number, since it uses less digits than its factorization.

1149248840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28731232 (or 28731228 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 41.

The square root of 1149248840 is about 33900.5728565167. The cubic root of 1149248840 is about 1047.4613926225.

The spelling of 1149248840 in words is "one billion, one hundred forty-nine million, two hundred forty-eight thousand, eight hundred forty".