1152445540 has 12 divisors (see below), whose sum is σ = 2420135676. Its totient is φ = 460978208.

The previous prime is 1152445531. The next prime is 1152445543. The reversal of 1152445540 is 455442511.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 464747364 + 687698176 = 21558^2 + 26224^2 .

It is not an unprimeable number, because it can be changed into a prime (1152445543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28811119 + ... + 28811158.

It is an arithmetic number, because the mean of its divisors is an integer number (201677973).

Almost surely, 2^1152445540 is an apocalyptic number.

1152445540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1152445540 is an abundant number, since it is smaller than the sum of its proper divisors (1267690136).

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

1152445540 is a wasteful number, since it uses less digits than its factorization.

1152445540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57622286 (or 57622284 counting only the distinct ones).

The product of its (nonzero) digits is 16000, while the sum is 31.

The square root of 1152445540 is about 33947.6882865387. The cubic root of 1152445540 is about 1048.4316843760.

The spelling of 1152445540 in words is "one billion, one hundred fifty-two million, four hundred forty-five thousand, five hundred forty".