1642445422 has 16 divisors (see below), whose sum is σ = 2522044800. Its totient is φ = 801948600.

The previous prime is 1642445411. The next prime is 1642445449. The reversal of 1642445422 is 2245442461.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28272 + ... + 63907.

It is an arithmetic number, because the mean of its divisors is an integer number (157627800).

Almost surely, 2^1642445422 is an apocalyptic number.

1642445422 is a deficient number, since it is larger than the sum of its proper divisors (879599378).

1642445422 is a wasteful number, since it uses less digits than its factorization.

1642445422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92391.

The product of its digits is 61440, while the sum is 34.

The square root of 1642445422 is about 40527.0949119228. The cubic root of 1642445422 is about 1179.8595595570.

Adding to 1642445422 its reverse (2245442461), we get a palindrome (3887887883).

The spelling of 1642445422 in words is "one billion, six hundred forty-two million, four hundred forty-five thousand, four hundred twenty-two".