1155134540 has 24 divisors (see below), whose sum is σ = 2772323232. Its totient is φ = 396046080.

The previous prime is 1155134527. The next prime is 1155134567. The reversal of 1155134540 is 454315511.

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, 4125341 + ... + 4125620.

It is an arithmetic number, because the mean of its divisors is an integer number (115513468).

Almost surely, 2^1155134540 is an apocalyptic number.

1155134540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1155134540 is an abundant number, since it is smaller than the sum of its proper divisors (1617188692).

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

1155134540 is a wasteful number, since it uses less digits than its factorization.

1155134540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8250977 (or 8250975 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 29.

The square root of 1155134540 is about 33987.2702640268. The cubic root of 1155134540 is about 1049.2464858381.

The spelling of 1155134540 in words is "one billion, one hundred fifty-five million, one hundred thirty-four thousand, five hundred forty".