1421782418 has 16 divisors (see below), whose sum is σ = 2438334144. Its totient is φ = 609087120.

The previous prime is 1421782361. The next prime is 1421782457. The reversal of 1421782418 is 8142871241.

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 7 ways as a sum of consecutive naturals, for example, 17321 + ... + 56067.

It is an arithmetic number, because the mean of its divisors is an integer number (152395884).

Almost surely, 2^1421782418 is an apocalyptic number.

1421782418 is a deficient number, since it is larger than the sum of its proper divisors (1016551726).

1421782418 is a wasteful number, since it uses less digits than its factorization.

1421782418 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41377.

The product of its digits is 28672, while the sum is 38.

The square root of 1421782418 is about 37706.5301771457. The cubic root of 1421782418 is about 1124.4609547282.

The spelling of 1421782418 in words is "one billion, four hundred twenty-one million, seven hundred eighty-two thousand, four hundred eighteen".