1151911520 has 48 divisors (see below), whose sum is σ = 2784695760. Its totient is φ = 450046464.

The previous prime is 1151911513. The next prime is 1151911549. The reversal of 1151911520 is 251191511.

It is a self number, because there is not a number n which added to its sum of digits gives 1151911520.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 76835 + ... + 90594.

It is an arithmetic number, because the mean of its divisors is an integer number (58014495).

Almost surely, 2^1151911520 is an apocalyptic number.

1151911520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1151911520 is an abundant number, since it is smaller than the sum of its proper divisors (1632784240).

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

1151911520 is a wasteful number, since it uses less digits than its factorization.

1151911520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 167487 (or 167479 counting only the distinct ones).

The product of its (nonzero) digits is 450, while the sum is 26.

The square root of 1151911520 is about 33939.8220384256. The cubic root of 1151911520 is about 1048.2697186633.

The spelling of 1151911520 in words is "one billion, one hundred fifty-one million, nine hundred eleven thousand, five hundred twenty".