1220180904 has 48 divisors (see below), whose sum is σ = 3307468320. Its totient is φ = 406380960.

The previous prime is 1220180903. The next prime is 1220180917. The reversal of 1220180904 is 4090810221.

It is not an unprimeable number, because it can be changed into a prime (1220180903) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 86389 + ... + 99515.

It is an arithmetic number, because the mean of its divisors is an integer number (68905590).

Almost surely, 2^1220180904 is an apocalyptic number.

It is an amenable number.

1220180904 is an abundant number, since it is smaller than the sum of its proper divisors (2087287416).

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

1220180904 is a wasteful number, since it uses less digits than its factorization.

1220180904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14430 (or 14423 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 27.

The square root of 1220180904 is about 34931.0879303809. The cubic root of 1220180904 is about 1068.5825421021.

The spelling of 1220180904 in words is "one billion, two hundred twenty million, one hundred eighty thousand, nine hundred four".