1422207878 has 32 divisors (see below), whose sum is σ = 2635053120. Its totient is φ = 560609280.

The previous prime is 1422207851. The next prime is 1422207881. The reversal of 1422207878 is 8787022241.

It is a congruent number.

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, 37238 + ... + 65046.

It is an arithmetic number, because the mean of its divisors is an integer number (82345410).

Almost surely, 2^1422207878 is an apocalyptic number.

1422207878 is a deficient number, since it is larger than the sum of its proper divisors (1212845242).

1422207878 is a wasteful number, since it uses less digits than its factorization.

1422207878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28112.

The product of its (nonzero) digits is 100352, while the sum is 41.

The square root of 1422207878 is about 37712.1714834879. The cubic root of 1422207878 is about 1124.5731063108.

The spelling of 1422207878 in words is "one billion, four hundred twenty-two million, two hundred seven thousand, eight hundred seventy-eight".