1155576798 has 48 divisors (see below), whose sum is σ = 2534532000. Its totient is φ = 380479680.

The previous prime is 1155576757. The next prime is 1155576817. The reversal of 1155576798 is 8976755511.

It is a happy number.

1155576798 is a `hidden beast` number, since 1 + 15 + 557 + 6 + 79 + 8 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 825303 + ... + 826701.

It is an arithmetic number, because the mean of its divisors is an integer number (52802750).

Almost surely, 2^1155576798 is an apocalyptic number.

1155576798 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1155576798 is an abundant number, since it is smaller than the sum of its proper divisors (1378955202).

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

1155576798 is a wasteful number, since it uses less digits than its factorization.

1155576798 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1937 (or 1934 counting only the distinct ones).

The product of its digits is 2646000, while the sum is 54.

The square root of 1155576798 is about 33993.7758714739. The cubic root of 1155576798 is about 1049.3803745549.

The spelling of 1155576798 in words is "one billion, one hundred fifty-five million, five hundred seventy-six thousand, seven hundred ninety-eight".