1387578222 has 16 divisors (see below), whose sum is σ = 3083507280. Its totient is φ = 462526056.

The previous prime is 1387578221. The next prime is 1387578229. The reversal of 1387578222 is 2228757831.

1387578222 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1387578221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12847893 + ... + 12848000.

It is an arithmetic number, because the mean of its divisors is an integer number (192719205).

Almost surely, 2^1387578222 is an apocalyptic number.

1387578222 is an abundant number, since it is smaller than the sum of its proper divisors (1695929058).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1387578222 is a wasteful number, since it uses less digits than its factorization.

1387578222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25695904 (or 25695898 counting only the distinct ones).

The product of its digits is 376320, while the sum is 45.

The square root of 1387578222 is about 37250.2110329593. The cubic root of 1387578222 is about 1115.3705115731.

The spelling of 1387578222 in words is "one billion, three hundred eighty-seven million, five hundred seventy-eight thousand, two hundred twenty-two".