1155795998 has 8 divisors (see below), whose sum is σ = 1981364592. Its totient is φ = 495341136.

The previous prime is 1155795989. The next prime is 1155796001. The reversal of 1155795998 is 8995975511.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41278415 + ... + 41278442.

It is an arithmetic number, because the mean of its divisors is an integer number (247670574).

Almost surely, 2^1155795998 is an apocalyptic number.

1155795998 is a deficient number, since it is larger than the sum of its proper divisors (825568594).

1155795998 is an equidigital number, since it uses as much as digits as its factorization.

1155795998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82556866.

The product of its digits is 5103000, while the sum is 59.

The square root of 1155795998 is about 33996.9998382210. Note that the first 3 decimals coincide. The cubic root of 1155795998 is about 1049.4467222685.

The spelling of 1155795998 in words is "one billion, one hundred fifty-five million, seven hundred ninety-five thousand, nine hundred ninety-eight".