1416642638 has 4 divisors (see below), whose sum is σ = 2124963960. Its totient is φ = 708321318.

The previous prime is 1416642629. The next prime is 1416642649. The reversal of 1416642638 is 8362466141.

It is a happy number.

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

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1416642595 and 1416642604.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 354160658 + ... + 354160661.

It is an arithmetic number, because the mean of its divisors is an integer number (531240990).

Almost surely, 2^1416642638 is an apocalyptic number.

1416642638 is a deficient number, since it is larger than the sum of its proper divisors (708321322).

1416642638 is an equidigital number, since it uses as much as digits as its factorization.

1416642638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 708321321.

The product of its digits is 165888, while the sum is 41.

The square root of 1416642638 is about 37638.3134319273. The cubic root of 1416642638 is about 1123.1043335841.

The spelling of 1416642638 in words is "one billion, four hundred sixteen million, six hundred forty-two thousand, six hundred thirty-eight".