1866660104 has 16 divisors (see below), whose sum is σ = 3517757100. Its totient is φ = 928591552.

The previous prime is 1866660091. The next prime is 1866660119. The reversal of 1866660104 is 4010666681.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1866067204 + 592900 = 43198^2 + 770^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 590639 + ... + 593790.

Almost surely, 2^1866660104 is an apocalyptic number.

It is an amenable number.

1866660104 is a deficient number, since it is larger than the sum of its proper divisors (1651096996).

1866660104 is a wasteful number, since it uses less digits than its factorization.

1866660104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1184632 (or 1184628 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 38.

The square root of 1866660104 is about 43204.8620412101. The cubic root of 1866660104 is about 1231.2750573581.

The spelling of 1866660104 in words is "one billion, eight hundred sixty-six million, six hundred sixty thousand, one hundred four".