1122742638 has 24 divisors (see below), whose sum is σ = 2446055976. Its totient is φ = 372178800.

The previous prime is 1122742609. The next prime is 1122742711. The reversal of 1122742638 is 8362472211.

It is a happy number.

1122742638 is a `hidden beast` number, since 1 + 1 + 227 + 426 + 3 + 8 = 666.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 169048 + ... + 175563.

It is an arithmetic number, because the mean of its divisors is an integer number (101918999).

Almost surely, 2^1122742638 is an apocalyptic number.

1122742638 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1122742638 is an abundant number, since it is smaller than the sum of its proper divisors (1323313338).

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

1122742638 is a wasteful number, since it uses less digits than its factorization.

1122742638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 344800 (or 344797 counting only the distinct ones).

The product of its digits is 32256, while the sum is 36.

The square root of 1122742638 is about 33507.3519992255. The cubic root of 1122742638 is about 1039.3458157835.

The spelling of 1122742638 in words is "one billion, one hundred twenty-two million, seven hundred forty-two thousand, six hundred thirty-eight".