1421616338 has 32 divisors (see below), whose sum is σ = 2254915584. Its totient is φ = 670860432.

The previous prime is 1421616299. The next prime is 1421616341. The reversal of 1421616338 is 8336161241.

It is a junction number, because it is equal to n+sod(n) for n = 1421616298 and 1421616307.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1805981 + ... + 1806767.

It is an arithmetic number, because the mean of its divisors is an integer number (70466112).

Almost surely, 2^1421616338 is an apocalyptic number.

1421616338 is a deficient number, since it is larger than the sum of its proper divisors (833299246).

1421616338 is a wasteful number, since it uses less digits than its factorization.

1421616338 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1286.

The product of its digits is 20736, while the sum is 35.

The square root of 1421616338 is about 37704.3278417743. The cubic root of 1421616338 is about 1124.4171698412.

Adding to 1421616338 its reverse (8336161241), we get a palindrome (9757777579).

The spelling of 1421616338 in words is "one billion, four hundred twenty-one million, six hundred sixteen thousand, three hundred thirty-eight".