1345985194 has 16 divisors (see below), whose sum is σ = 2128438080. Its totient is φ = 636612480.

The previous prime is 1345985171. The next prime is 1345985203. The reversal of 1345985194 is 4915895431.

It is a happy number.

It is a super-2 number, since 2×1345985194² = 3623352284934435272, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 742 + ... + 51889.

It is an arithmetic number, because the mean of its divisors is an integer number (133027380).

Almost surely, 2^1345985194 is an apocalyptic number.

1345985194 is a deficient number, since it is larger than the sum of its proper divisors (782452886).

1345985194 is a wasteful number, since it uses less digits than its factorization.

1345985194 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53325.

The product of its digits is 777600, while the sum is 49.

The square root of 1345985194 is about 36687.6708718338. The cubic root of 1345985194 is about 1104.1127563936.

The spelling of 1345985194 in words is "one billion, three hundred forty-five million, nine hundred eighty-five thousand, one hundred ninety-four".