1866830713 has 12 divisors (see below), whose sum is σ = 2090694564. Its totient is φ = 1665092000.

The previous prime is 1866830711. The next prime is 1866830723. The reversal of 1866830713 is 3170386681.

It can be written as a sum of positive squares in 2 ways, for example, as 1489033744 + 377796969 = 38588^2 + 19437^2 .

It is not a de Polignac number, because 1866830713 - 2¹ = 1866830711 is a prime.

It is a super-2 number, since 2×1866830713² = 6970113822000176738, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1866830713.

It is not an unprimeable number, because it can be changed into a prime (1866830711) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 139138 + ... + 151963.

It is an arithmetic number, because the mean of its divisors is an integer number (174224547).

Almost surely, 2^1866830713 is an apocalyptic number.

It is an amenable number.

1866830713 is a deficient number, since it is larger than the sum of its proper divisors (223863851).

1866830713 is a wasteful number, since it uses less digits than its factorization.

1866830713 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 291176 (or 291165 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 43.

The square root of 1866830713 is about 43206.8364150860. The cubic root of 1866830713 is about 1231.3125682411.

The spelling of 1866830713 in words is "one billion, eight hundred sixty-six million, eight hundred thirty thousand, seven hundred thirteen".