1190155000 has 40 divisors (see below), whose sum is σ = 2788544880. Its totient is φ = 476060000.

The previous prime is 1190154991. The next prime is 1190155019. The reversal of 1190155000 is 5510911.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 114016 + ... + 124015.

It is an arithmetic number, because the mean of its divisors is an integer number (69713622).

Almost surely, 2^1190155000 is an apocalyptic number.

1190155000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1190155000 is an abundant number, since it is smaller than the sum of its proper divisors (1598389880).

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

1190155000 is an equidigital number, since it uses as much as digits as its factorization.

1190155000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 238057 (or 238038 counting only the distinct ones).

The product of its (nonzero) digits is 225, while the sum is 22.

The square root of 1190155000 is about 34498.6231609321. The cubic root of 1190155000 is about 1059.7445094461.

Adding to 1190155000 its reverse (5510911), we get a palindrome (1195665911).

The spelling of 1190155000 in words is "one billion, one hundred ninety million, one hundred fifty-five thousand".