1158901100 has 36 divisors (see below), whose sum is σ = 2874076464. Its totient is φ = 397337280.

The previous prime is 1158901097. The next prime is 1158901109. The reversal of 1158901100 is 11098511.

It is a self number, because there is not a number n which added to its sum of digits gives 1158901100.

It is not an unprimeable number, because it can be changed into a prime (1158901109) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 827087 + ... + 828486.

Almost surely, 2^1158901100 is an apocalyptic number.

1158901100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1158901100 is an abundant number, since it is smaller than the sum of its proper divisors (1715175364).

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

1158901100 is a wasteful number, since it uses less digits than its factorization.

1158901100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1655594 (or 1655587 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 26.

The square root of 1158901100 is about 34042.6365018927. The cubic root of 1158901100 is about 1050.3856784239.

Adding to 1158901100 its reverse (11098511), we get a palindrome (1169999611).

The spelling of 1158901100 in words is "one billion, one hundred fifty-eight million, nine hundred one thousand, one hundred".