1220000194 has 32 divisors (see below), whose sum is σ = 2106631296. Its totient is φ = 519073920.

The previous prime is 1220000191. The next prime is 1220000231. The reversal of 1220000194 is 4910000221.

It is not an unprimeable number, because it can be changed into a prime (1220000191) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1602774 + ... + 1603534.

It is an arithmetic number, because the mean of its divisors is an integer number (65832228).

Almost surely, 2^1220000194 is an apocalyptic number.

1220000194 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

1220000194 is a deficient number, since it is larger than the sum of its proper divisors (886631102).

1220000194 is a wasteful number, since it uses less digits than its factorization.

1220000194 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1450.

The product of its (nonzero) digits is 144, while the sum is 19.

The square root of 1220000194 is about 34928.5011702478. The cubic root of 1220000194 is about 1068.5297867868.

The spelling of 1220000194 in words is "one billion, two hundred twenty million, one hundred ninety-four", and thus it is an aban number.