1666350352 has 40 divisors (see below), whose sum is σ = 3323727000. Its totient is φ = 808722432.

The previous prime is 1666350337. The next prime is 1666350401. The reversal of 1666350352 is 2530536661.

It can be written as a sum of positive squares in 4 ways, for example, as 504631296 + 1161719056 = 22464^2 + 34084^2 .

It is a super-2 number, since 2×1666350352² = 5553446991221047808, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 262674 + ... + 268942.

It is an arithmetic number, because the mean of its divisors is an integer number (83093175).

Almost surely, 2^1666350352 is an apocalyptic number.

It is an amenable number.

1666350352 is a deficient number, since it is larger than the sum of its proper divisors (1657376648).

1666350352 is a wasteful number, since it uses less digits than its factorization.

1666350352 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6763 (or 6757 counting only the distinct ones).

The product of its (nonzero) digits is 97200, while the sum is 37.

The square root of 1666350352 is about 40820.9548148987. The cubic root of 1666350352 is about 1185.5560902497.

The spelling of 1666350352 in words is "one billion, six hundred sixty-six million, three hundred fifty thousand, three hundred fifty-two".