1866739416 has 32 divisors (see below), whose sum is σ = 4669410240. Its totient is φ = 621904928.

The previous prime is 1866739411. The next prime is 1866739423. The reversal of 1866739416 is 6149376681.

It is a happy number.

1866739416 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1866739411) 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, 25375 + ... + 66161.

It is an arithmetic number, because the mean of its divisors is an integer number (145919070).

Almost surely, 2^1866739416 is an apocalyptic number.

It is an amenable number.

1866739416 is an abundant number, since it is smaller than the sum of its proper divisors (2802670824).

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

1866739416 is a wasteful number, since it uses less digits than its factorization.

1866739416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42703 (or 42699 counting only the distinct ones).

The product of its digits is 1306368, while the sum is 51.

The square root of 1866739416 is about 43205.7798911210. The cubic root of 1866739416 is about 1231.2924955451.

The spelling of 1866739416 in words is "one billion, eight hundred sixty-six million, seven hundred thirty-nine thousand, four hundred sixteen".