1372451666 has 8 divisors (see below), whose sum is σ = 2058946560. Its totient is φ = 686136148.

The previous prime is 1372451659. The next prime is 1372451669. The reversal of 1372451666 is 6661542731.

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

It is not an unprimeable number, because it can be changed into a prime (1372451669) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23726 + ... + 57513.

It is an arithmetic number, because the mean of its divisors is an integer number (257368320).

Almost surely, 2^1372451666 is an apocalyptic number.

1372451666 is a deficient number, since it is larger than the sum of its proper divisors (686494894).

1372451666 is an equidigital number, since it uses as much as digits as its factorization.

1372451666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89688.

The product of its digits is 181440, while the sum is 41.

The square root of 1372451666 is about 37046.6147711232. The cubic root of 1372451666 is about 1111.3026575378.

The spelling of 1372451666 in words is "one billion, three hundred seventy-two million, four hundred fifty-one thousand, six hundred sixty-six".