1149445320 has 32 divisors (see below), whose sum is σ = 3448336320. Its totient is φ = 306518720.

The previous prime is 1149445279. The next prime is 1149445321. The reversal of 1149445320 is 235449411.

It is not an unprimeable number, because it can be changed into a prime (1149445321) 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, 4789236 + ... + 4789475.

It is an arithmetic number, because the mean of its divisors is an integer number (107760510).

Almost surely, 2^1149445320 is an apocalyptic number.

1149445320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1149445320 is an abundant number, since it is smaller than the sum of its proper divisors (2298891000).

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

1149445320 is a wasteful number, since it uses less digits than its factorization.

1149445320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9578725 (or 9578721 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 33.

The square root of 1149445320 is about 33903.4706188024. The cubic root of 1149445320 is about 1047.5210818966.

The spelling of 1149445320 in words is "one billion, one hundred forty-nine million, four hundred forty-five thousand, three hundred twenty".