1345518194 has 4 divisors (see below), whose sum is σ = 2018277294. Its totient is φ = 672759096.

The previous prime is 1345518179. The next prime is 1345518217. The reversal of 1345518194 is 4918155431.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1318633969 + 26884225 = 36313^2 + 5185^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 336379547 + ... + 336379550.

Almost surely, 2^1345518194 is an apocalyptic number.

1345518194 is a deficient number, since it is larger than the sum of its proper divisors (672759100).

1345518194 is an equidigital number, since it uses as much as digits as its factorization.

1345518194 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 672759099.

The product of its digits is 86400, while the sum is 41.

The square root of 1345518194 is about 36681.3057837368. The cubic root of 1345518194 is about 1103.9850481286.

The spelling of 1345518194 in words is "one billion, three hundred forty-five million, five hundred eighteen thousand, one hundred ninety-four".