1472431666 has 8 divisors (see below), whose sum is σ = 2211314220. Its totient is φ = 735326928.

The previous prime is 1472431663. The next prime is 1472431673. The reversal of 1472431666 is 6661342741.

It can be written as a sum of positive squares in 2 ways, for example, as 1363751041 + 108680625 = 36929^2 + 10425^2 .

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

It is a super-2 number, since 2×1472431666² = 4336110022079071112, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1472431663) 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, 442381 + ... + 445696.

Almost surely, 2^1472431666 is an apocalyptic number.

1472431666 is a deficient number, since it is larger than the sum of its proper divisors (738882554).

1472431666 is an equidigital number, since it uses as much as digits as its factorization.

1472431666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 888908.

The product of its digits is 145152, while the sum is 40.

The square root of 1472431666 is about 38372.2773105793. The cubic root of 1472431666 is about 1137.6579767871.

The spelling of 1472431666 in words is "one billion, four hundred seventy-two million, four hundred thirty-one thousand, six hundred sixty-six".