1158254660 has 24 divisors (see below), whose sum is σ = 2498075160. Its totient is φ = 450779904.

The previous prime is 1158254651. The next prime is 1158254681. The reversal of 1158254660 is 664528511.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 175933696 + 982320964 = 13264^2 + 31342^2 .

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, 781865 + ... + 783344.

It is an arithmetic number, because the mean of its divisors is an integer number (104086465).

Almost surely, 2^1158254660 is an apocalyptic number.

1158254660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1158254660 is an abundant number, since it is smaller than the sum of its proper divisors (1339820500).

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

1158254660 is a wasteful number, since it uses less digits than its factorization.

1158254660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1565255 (or 1565253 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 38.

The square root of 1158254660 is about 34033.1406132317. The cubic root of 1158254660 is about 1050.1903388880.

The spelling of 1158254660 in words is "one billion, one hundred fifty-eight million, two hundred fifty-four thousand, six hundred sixty".