1815089049 has 12 divisors (see below), whose sum is σ = 2633348016. Its totient is φ = 1204727352.

The previous prime is 1815089041. The next prime is 1815089071. The reversal of 1815089049 is 9409805181.

1815089049 is a `hidden beast` number, since 18 + 1 + 508 + 90 + 49 = 666.

It is not a de Polignac number, because 1815089049 - 2³ = 1815089041 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1815088995 and 1815089013.

It is not an unprimeable number, because it can be changed into a prime (1815089041) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 442179 + ... + 446264.

It is an arithmetic number, because the mean of its divisors is an integer number (219445668).

Almost surely, 2^1815089049 is an apocalyptic number.

It is an amenable number.

1815089049 is a deficient number, since it is larger than the sum of its proper divisors (818258967).

1815089049 is a wasteful number, since it uses less digits than its factorization.

1815089049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 888676 (or 888673 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 45.

The square root of 1815089049 is about 42603.8619024144. The cubic root of 1815089049 is about 1219.8300061002.

The spelling of 1815089049 in words is "one billion, eight hundred fifteen million, eighty-nine thousand, forty-nine".