1159812045 has 48 divisors (see below), whose sum is σ = 2305884672. Its totient is φ = 528272640.

The previous prime is 1159812011. The next prime is 1159812047. The reversal of 1159812045 is 5402189511.

1159812045 is a `hidden beast` number, since 1 + 1 + 598 + 1 + 20 + 45 = 666.

It is not a de Polignac number, because 1159812045 - 2¹⁰ = 1159811021 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1159812047) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 81964 + ... + 95066.

It is an arithmetic number, because the mean of its divisors is an integer number (48039264).

Almost surely, 2^1159812045 is an apocalyptic number.

1159812045 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1159812045 is a deficient number, since it is larger than the sum of its proper divisors (1146072627).

1159812045 is a wasteful number, since it uses less digits than its factorization.

1159812045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13402 (or 13399 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 36.

The square root of 1159812045 is about 34056.0133456633. The cubic root of 1159812045 is about 1050.6608221167.

The spelling of 1159812045 in words is "one billion, one hundred fifty-nine million, eight hundred twelve thousand, forty-five".