1220185054 has 36 divisors (see below), whose sum is σ = 2123401392. Its totient is φ = 525400920.

The previous prime is 1220185037. The next prime is 1220185069. The reversal of 1220185054 is 4505810221.

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 17 ways as a sum of consecutive naturals, for example, 80379 + ... + 94345.

It is an arithmetic number, because the mean of its divisors is an integer number (58983372).

Almost surely, 2^1220185054 is an apocalyptic number.

1220185054 is a deficient number, since it is larger than the sum of its proper divisors (903216338).

1220185054 is a wasteful number, since it uses less digits than its factorization.

1220185054 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14029 (or 13999 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 28.

The square root of 1220185054 is about 34931.1473330035. The cubic root of 1220185054 is about 1068.5837535652.

Adding to 1220185054 its reverse (4505810221), we get a palindrome (5725995275).

The spelling of 1220185054 in words is "one billion, two hundred twenty million, one hundred eighty-five thousand, fifty-four".