1223130194 has 24 divisors (see below), whose sum is σ = 2171780940. Its totient is φ = 513200160.

The previous prime is 1223130191. The next prime is 1223130197. The reversal of 1223130194 is 4910313221.

It is an interprime number because it is at equal distance from previous prime (1223130191) and next prime (1223130197).

It can be written as a sum of positive squares in 2 ways, for example, as 1219755625 + 3374569 = 34925^2 + 1837^2 .

It is a Harshad number since it is a multiple of its sum of digits (26).

It is not an unprimeable number, because it can be changed into a prime (1223130191) 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, 191249 + ... + 197540.

Almost surely, 2^1223130194 is an apocalyptic number.

1223130194 is a deficient number, since it is larger than the sum of its proper divisors (948650746).

1223130194 is a wasteful number, since it uses less digits than its factorization.

1223130194 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 388826 (or 388815 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 26.

The square root of 1223130194 is about 34973.2782849992. The cubic root of 1223130194 is about 1069.4428036135.

The spelling of 1223130194 in words is "one billion, two hundred twenty-three million, one hundred thirty thousand, one hundred ninety-four".