1642622407 has 4 divisors (see below), whose sum is σ = 1648729080. Its totient is φ = 1636515736.

The previous prime is 1642622381. The next prime is 1642622413. The reversal of 1642622407 is 7042262461.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1642622407 - 2⁷ = 1642622279 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1642622477) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3052933 + ... + 3053470.

It is an arithmetic number, because the mean of its divisors is an integer number (412182270).

Almost surely, 2^1642622407 is an apocalyptic number.

1642622407 is a deficient number, since it is larger than the sum of its proper divisors (6106673).

1642622407 is an equidigital number, since it uses as much as digits as its factorization.

1642622407 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6106672.

The product of its (nonzero) digits is 32256, while the sum is 34.

The square root of 1642622407 is about 40529.2783922931. The cubic root of 1642622407 is about 1179.9019374125.

Adding to 1642622407 its reverse (7042262461), we get a palindrome (8684884868).

The spelling of 1642622407 in words is "one billion, six hundred forty-two million, six hundred twenty-two thousand, four hundred seven".