1422638887 has 8 divisors (see below), whose sum is σ = 1480097792. Its totient is φ = 1365903000.

The previous prime is 1422638881. The next prime is 1422638929. The reversal of 1422638887 is 7888362241.

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

It is a cyclic number.

It is not a de Polignac number, because 1422638887 - 2⁷ = 1422638759 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1422638887.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1422638881) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 176739 + ... + 184612.

It is an arithmetic number, because the mean of its divisors is an integer number (185012224).

Almost surely, 2^1422638887 is an apocalyptic number.

1422638887 is a deficient number, since it is larger than the sum of its proper divisors (57458905).

1422638887 is a wasteful number, since it uses less digits than its factorization.

1422638887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 361509.

The product of its digits is 1032192, while the sum is 49.

The square root of 1422638887 is about 37717.8855054204. The cubic root of 1422638887 is about 1124.6866978098.

The spelling of 1422638887 in words is "one billion, four hundred twenty-two million, six hundred thirty-eight thousand, eight hundred eighty-seven".