1122278890 has 16 divisors (see below), whose sum is σ = 2126423520. Its totient is φ = 425284560.

The previous prime is 1122278881. The next prime is 1122278891. The reversal of 1122278890 is 988722211.

It is not an unprimeable number, because it can be changed into a prime (1122278891) 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, 2953176 + ... + 2953555.

It is an arithmetic number, because the mean of its divisors is an integer number (132901470).

Almost surely, 2^1122278890 is an apocalyptic number.

1122278890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1122278890 is a deficient number, since it is larger than the sum of its proper divisors (1004144630).

1122278890 is a wasteful number, since it uses less digits than its factorization.

1122278890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5906757.

The product of its (nonzero) digits is 32256, while the sum is 40.

The square root of 1122278890 is about 33500.4311912548. The cubic root of 1122278890 is about 1039.2026957413.

The spelling of 1122278890 in words is "one billion, one hundred twenty-two million, two hundred seventy-eight thousand, eight hundred ninety".