1642315642 has 32 divisors (see below), whose sum is σ = 2760770304. Its totient is φ = 726321600.

The previous prime is 1642315637. The next prime is 1642315657. The reversal of 1642315642 is 2465132461.

It is a junction number, because it is equal to n+sod(n) for n = 1642315598 and 1642315607.

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, 174292 + ... + 183472.

It is an arithmetic number, because the mean of its divisors is an integer number (86274072).

Almost surely, 2^1642315642 is an apocalyptic number.

1642315642 is a deficient number, since it is larger than the sum of its proper divisors (1118454662).

1642315642 is a wasteful number, since it uses less digits than its factorization.

1642315642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9414.

The product of its digits is 34560, while the sum is 34.

The square root of 1642315642 is about 40525.4937292564. The cubic root of 1642315642 is about 1179.8284826833.

The spelling of 1642315642 in words is "one billion, six hundred forty-two million, three hundred fifteen thousand, six hundred forty-two".