1065818988 has 72 divisors (see below), whose sum is σ = 3027574368. Its totient is φ = 313682688.

The previous prime is 1065818987. The next prime is 1065819031. The reversal of 1065818988 is 8898185601.

It is a super-2 number, since 2×1065818988² = 2271940230362688288, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1065818981) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 38745 + ... + 60272.

It is an arithmetic number, because the mean of its divisors is an integer number (42049644).

Almost surely, 2^1065818988 is an apocalyptic number.

1065818988 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1065818988 is an abundant number, since it is smaller than the sum of its proper divisors (1961755380).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1065818988 is a wasteful number, since it uses less digits than its factorization.

1065818988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99063 (or 99058 counting only the distinct ones).

The product of its (nonzero) digits is 1105920, while the sum is 54.

The square root of 1065818988 is about 32646.8832815630. The cubic root of 1065818988 is about 1021.4751780629.

It can be divided in two parts, 10658 and 18988, that added together give a triangular number (29646 = T₂₄₃).

The spelling of 1065818988 in words is "one billion, sixty-five million, eight hundred eighteen thousand, nine hundred eighty-eight".