2815909489 has 8 divisors (see below), whose sum is σ = 2842025472. Its totient is φ = 2789814720.

The previous prime is 2815909423. The next prime is 2815909507. The reversal of 2815909489 is 9849095182.

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

It is a cyclic number.

It is not a de Polignac number, because 2815909489 - 2⁷ = 2815909361 is a prime.

It is a super-2 number, since 2×2815909489² = 15858692500480482242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2815904489) 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, 406872 + ... + 413734.

It is an arithmetic number, because the mean of its divisors is an integer number (355253184).

Almost surely, 2^2815909489 is an apocalyptic number.

It is an amenable number.

2815909489 is a deficient number, since it is larger than the sum of its proper divisors (26115983).

2815909489 is a wasteful number, since it uses less digits than its factorization.

2815909489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10607.

The product of its (nonzero) digits is 1866240, while the sum is 55.

The square root of 2815909489 is about 53065.1438234176. The cubic root of 2815909489 is about 1412.1242044533.

The spelling of 2815909489 in words is "two billion, eight hundred fifteen million, nine hundred nine thousand, four hundred eighty-nine".