1159455998 has 16 divisors (see below), whose sum is σ = 1849404960. Its totient is φ = 543280896.

The previous prime is 1159455991. The next prime is 1159456003. The reversal of 1159455998 is 8995549511.

It is a super-2 number, since 2×1159455998² = 2688676422596352008, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1159455991) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 65258 + ... + 81101.

It is an arithmetic number, because the mean of its divisors is an integer number (115587810).

Almost surely, 2^1159455998 is an apocalyptic number.

1159455998 is a deficient number, since it is larger than the sum of its proper divisors (689948962).

1159455998 is a wasteful number, since it uses less digits than its factorization.

1159455998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146611.

The product of its digits is 2916000, while the sum is 56.

The square root of 1159455998 is about 34050.7855709674. The cubic root of 1159455998 is about 1050.5532981084.

The spelling of 1159455998 in words is "one billion, one hundred fifty-nine million, four hundred fifty-five thousand, nine hundred ninety-eight".