1428669418 has 8 divisors (see below), whose sum is σ = 2337822720. Its totient is φ = 649395180.

The previous prime is 1428669401. The next prime is 1428669433. The reversal of 1428669418 is 8149668241.

It is a happy number.

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

It is an unprimeable number.

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, 32469738 + ... + 32469781.

It is an arithmetic number, because the mean of its divisors is an integer number (292227840).

Almost surely, 2^1428669418 is an apocalyptic number.

1428669418 is a deficient number, since it is larger than the sum of its proper divisors (909153302).

1428669418 is a wasteful number, since it uses less digits than its factorization.

1428669418 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64939532.

The product of its digits is 663552, while the sum is 49.

The square root of 1428669418 is about 37797.7435569903. The cubic root of 1428669418 is about 1126.2736306116.

The spelling of 1428669418 in words is "one billion, four hundred twenty-eight million, six hundred sixty-nine thousand, four hundred eighteen".