1429825666 has 4 divisors (see below), whose sum is σ = 2144738502. Its totient is φ = 714912832.

The previous prime is 1429825577. The next prime is 1429825693. The reversal of 1429825666 is 6665289241.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1404675441 + 25150225 = 37479^2 + 5015^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 357456415 + ... + 357456418.

Almost surely, 2^1429825666 is an apocalyptic number.

1429825666 is a deficient number, since it is larger than the sum of its proper divisors (714912836).

1429825666 is an equidigital number, since it uses as much as digits as its factorization.

1429825666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 714912835.

The product of its digits is 1244160, while the sum is 49.

The square root of 1429825666 is about 37813.0356623215. The cubic root of 1429825666 is about 1126.5773865546.

The spelling of 1429825666 in words is "one billion, four hundred twenty-nine million, eight hundred twenty-five thousand, six hundred sixty-six".