1220944190 has 16 divisors (see below), whose sum is σ = 2293252128. Its totient is φ = 467143776.

The previous prime is 1220944189. The next prime is 1220944217. The reversal of 1220944190 is 914490221.

It is a super-2 number, since 2×1220944190² = 2981409430189512200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2653997 + ... + 2654456.

It is an arithmetic number, because the mean of its divisors is an integer number (143328258).

Almost surely, 2^1220944190 is an apocalyptic number.

1220944190 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1220944190 is a deficient number, since it is larger than the sum of its proper divisors (1072307938).

1220944190 is a wasteful number, since it uses less digits than its factorization.

1220944190 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5308483.

The product of its (nonzero) digits is 5184, while the sum is 32.

The square root of 1220944190 is about 34942.0118195847. The cubic root of 1220944190 is about 1068.8053134624.

The spelling of 1220944190 in words is "one billion, two hundred twenty million, nine hundred forty-four thousand, one hundred ninety".