1642215616 has 14 divisors (see below), whose sum is σ = 3258771740. Its totient is φ = 821107776.

The previous prime is 1642215613. The next prime is 1642215643. The reversal of 1642215616 is 6165122461.

It is not an unprimeable number, because it can be changed into a prime (1642215613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12829746 + ... + 12829873.

It is an arithmetic number, because the mean of its divisors is an integer number (232769410).

Almost surely, 2^1642215616 is an apocalyptic number.

1642215616 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1642215616 is a deficient number, since it is larger than the sum of its proper divisors (1616556124).

1642215616 is an equidigital number, since it uses as much as digits as its factorization.

1642215616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25659631 (or 25659621 counting only the distinct ones).

The product of its digits is 17280, while the sum is 34.

The square root of 1642215616 is about 40524.2595984183. The cubic root of 1642215616 is about 1179.8045295290.

The spelling of 1642215616 in words is "one billion, six hundred forty-two million, two hundred fifteen thousand, six hundred sixteen".