1866802346 has 8 divisors (see below), whose sum is σ = 2800461924. Its totient is φ = 933315040.

The previous prime is 1866802339. The next prime is 1866802349. The reversal of 1866802346 is 6432086681.

It can be written as a sum of positive squares in 2 ways, for example, as 1866672025 + 130321 = 43205^2 + 361^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×1866802346² = 6969901998062207432, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1866802297 and 1866802306.

It is not an unprimeable number, because it can be changed into a prime (1866802349) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11285 + ... + 62136.

Almost surely, 2^1866802346 is an apocalyptic number.

1866802346 is a deficient number, since it is larger than the sum of its proper divisors (933659578).

1866802346 is a wasteful number, since it uses less digits than its factorization.

1866802346 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86136.

The product of its (nonzero) digits is 331776, while the sum is 44.

The square root of 1866802346 is about 43206.5081440285. The cubic root of 1866802346 is about 1231.3063314999.

The spelling of 1866802346 in words is "one billion, eight hundred sixty-six million, eight hundred two thousand, three hundred forty-six".