1866745343 has 8 divisors (see below), whose sum is σ = 1948341600. Its totient is φ = 1785185248.

The previous prime is 1866745339. The next prime is 1866745351. The reversal of 1866745343 is 3435476681.

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

It is a cyclic number.

It is not a de Polignac number, because 1866745343 - 2² = 1866745339 is a prime.

It is a super-2 number, since 2×1866745343² = 6969476351224375298, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1866745393) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 189053 + ... + 198681.

It is an arithmetic number, because the mean of its divisors is an integer number (243542700).

Almost surely, 2^1866745343 is an apocalyptic number.

1866745343 is a deficient number, since it is larger than the sum of its proper divisors (81596257).

1866745343 is an equidigital number, since it uses as much as digits as its factorization.

1866745343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18081.

The product of its digits is 1451520, while the sum is 47.

The square root of 1866745343 is about 43205.8484814267. The cubic root of 1866745343 is about 1231.2937986842.

The spelling of 1866745343 in words is "one billion, eight hundred sixty-six million, seven hundred forty-five thousand, three hundred forty-three".