1220180798 has 16 divisors (see below), whose sum is σ = 1945682640. Its totient is φ = 572256000.

The previous prime is 1220180777. The next prime is 1220180803. The reversal of 1220180798 is 8970810221.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 155123 + ... + 162798.

It is an arithmetic number, because the mean of its divisors is an integer number (121605165).

Almost surely, 2^1220180798 is an apocalyptic number.

1220180798 is a deficient number, since it is larger than the sum of its proper divisors (725501842).

1220180798 is a wasteful number, since it uses less digits than its factorization.

1220180798 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 318043.

The product of its (nonzero) digits is 16128, while the sum is 38.

The square root of 1220180798 is about 34931.0864131077. The cubic root of 1220180798 is about 1068.5825111586.

The spelling of 1220180798 in words is "one billion, two hundred twenty million, one hundred eighty thousand, seven hundred ninety-eight".