1149132220 has 24 divisors (see below), whose sum is σ = 2458711584. Its totient is φ = 450979776.

The previous prime is 1149132191. The next prime is 1149132227. The reversal of 1149132220 is 222319411.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1149132227) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 540984 + ... + 543103.

It is an arithmetic number, because the mean of its divisors is an integer number (102446316).

Almost surely, 2^1149132220 is an apocalyptic number.

1149132220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1149132220 is an abundant number, since it is smaller than the sum of its proper divisors (1309579364).

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

1149132220 is a wasteful number, since it uses less digits than its factorization.

1149132220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1084149 (or 1084147 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 1149132220 is about 33898.8527829483. The cubic root of 1149132220 is about 1047.4259610503.

The spelling of 1149132220 in words is "one billion, one hundred forty-nine million, one hundred thirty-two thousand, two hundred twenty".