1220180898 has 16 divisors (see below), whose sum is σ = 2458992096. Its totient is φ = 403621920.

The previous prime is 1220180879. The next prime is 1220180903. The reversal of 1220180898 is 8980810221.

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, 775411 + ... + 776982.

It is an arithmetic number, because the mean of its divisors is an integer number (153687006).

Almost surely, 2^1220180898 is an apocalyptic number.

1220180898 is an abundant number, since it is smaller than the sum of its proper divisors (1238811198).

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

1220180898 is a wasteful number, since it uses less digits than its factorization.

1220180898 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1552529.

The product of its (nonzero) digits is 18432, while the sum is 39.

The square root of 1220180898 is about 34931.0878444975. The cubic root of 1220180898 is about 1068.5825403506.

The spelling of 1220180898 in words is "one billion, two hundred twenty million, one hundred eighty thousand, eight hundred ninety-eight".