1150431620 has 48 divisors (see below), whose sum is σ = 2607156720. Its totient is φ = 423891456.

The previous prime is 1150431571. The next prime is 1150431637. The reversal of 1150431620 is 261340511.

1150431620 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 154902916 + 995528704 = 12446^2 + 31552^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 127994 + ... + 136686.

It is an arithmetic number, because the mean of its divisors is an integer number (54315765).

Almost surely, 2^1150431620 is an apocalyptic number.

1150431620 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 1150431620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1303578360).

1150431620 is an abundant number, since it is smaller than the sum of its proper divisors (1456725100).

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

1150431620 is a wasteful number, since it uses less digits than its factorization.

1150431620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9224 (or 9222 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 1150431620 is about 33918.0132083234. The cubic root of 1150431620 is about 1047.8206103319.

The spelling of 1150431620 in words is "one billion, one hundred fifty million, four hundred thirty-one thousand, six hundred twenty".