1642625422 has 8 divisors (see below), whose sum is σ = 2486543400. Its totient is φ = 813777624.

The previous prime is 1642625351. The next prime is 1642625429. The reversal of 1642625422 is 2245262461.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1642625429) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3767272 + ... + 3767707.

It is an arithmetic number, because the mean of its divisors is an integer number (310817925).

Almost surely, 2^1642625422 is an apocalyptic number.

1642625422 is a deficient number, since it is larger than the sum of its proper divisors (843917978).

1642625422 is a wasteful number, since it uses less digits than its factorization.

1642625422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7535090.

The product of its digits is 46080, while the sum is 34.

The square root of 1642625422 is about 40529.3155876089. The cubic root of 1642625422 is about 1179.9026593074.

Adding to 1642625422 its reverse (2245262461), we get a palindrome (3887887883).

The spelling of 1642625422 in words is "one billion, six hundred forty-two million, six hundred twenty-five thousand, four hundred twenty-two".