1818463689 has 40 divisors (see below), whose sum is σ = 3204715008. Its totient is φ = 1005592320.

The previous prime is 1818463657. The next prime is 1818463729. The reversal of 1818463689 is 9863648181.

1818463689 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1818463689 - 2⁵ = 1818463657 is a prime.

It is a super-2 number, since 2×1818463689² = 6613620376422977442, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1818463649) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 34152 + ... + 69305.

Almost surely, 2^1818463689 is an apocalyptic number.

It is an amenable number.

1818463689 is a deficient number, since it is larger than the sum of its proper divisors (1386251319).

1818463689 is a wasteful number, since it uses less digits than its factorization.

1818463689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103507 (or 103498 counting only the distinct ones).

The product of its digits is 1990656, while the sum is 54.

The square root of 1818463689 is about 42643.4483713501. The cubic root of 1818463689 is about 1220.5855133156.

The spelling of 1818463689 in words is "one billion, eight hundred eighteen million, four hundred sixty-three thousand, six hundred eighty-nine".