1150531540 has 24 divisors (see below), whose sum is σ = 2417685480. Its totient is φ = 459913728.

The previous prime is 1150531531. The next prime is 1150531573. The reversal of 1150531540 is 451350511.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 687593284 + 462938256 = 26222^2 + 21516^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14304 + ... + 50056.

It is an arithmetic number, because the mean of its divisors is an integer number (100736895).

Almost surely, 2^1150531540 is an apocalyptic number.

1150531540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1150531540 is an abundant number, since it is smaller than the sum of its proper divisors (1267153940).

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

1150531540 is a wasteful number, since it uses less digits than its factorization.

1150531540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37371 (or 37369 counting only the distinct ones).

The product of its (nonzero) digits is 1500, while the sum is 25.

The square root of 1150531540 is about 33919.4861399756. The cubic root of 1150531540 is about 1047.8509453825.

The spelling of 1150531540 in words is "one billion, one hundred fifty million, five hundred thirty-one thousand, five hundred forty".