1150981920 has 384 divisors, whose sum is σ = 4487374080. Its totient is φ = 273162240.

The previous prime is 1150981913. The next prime is 1150981933. The reversal of 1150981920 is 291890511.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2518332 + ... + 2518788.

It is an arithmetic number, because the mean of its divisors is an integer number (11685870).

Almost surely, 2^1150981920 is an apocalyptic number.

1150981920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1150981920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2243687040).

1150981920 is an abundant number, since it is smaller than the sum of its proper divisors (3336392160).

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

1150981920 is a wasteful number, since it uses less digits than its factorization.

1150981920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 545 (or 531 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 36.

The square root of 1150981920 is about 33926.1244470983. The cubic root of 1150981920 is about 1047.9876559741.

The spelling of 1150981920 in words is "one billion, one hundred fifty million, nine hundred eighty-one thousand, nine hundred twenty".