1220323195 has 24 divisors (see below), whose sum is σ = 1834512624. Its totient is φ = 772422336.

The previous prime is 1220323151. The next prime is 1220323201. The reversal of 1220323195 is 5913230221.

It is not a de Polignac number, because 1220323195 - 2⁷ = 1220323067 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 188389 + ... + 194758.

It is an arithmetic number, because the mean of its divisors is an integer number (76438026).

Almost surely, 2^1220323195 is an apocalyptic number.

1220323195 is a deficient number, since it is larger than the sum of its proper divisors (614189429).

1220323195 is a wasteful number, since it uses less digits than its factorization.

1220323195 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 383179 (or 383172 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 28.

The square root of 1220323195 is about 34933.1246097454. The cubic root of 1220323195 is about 1068.6240779563.

It can be divided in two parts, 1220 and 323195, that added together give a triangular number (324415 = T₈₀₅).

The spelling of 1220323195 in words is "one billion, two hundred twenty million, three hundred twenty-three thousand, one hundred ninety-five".