1317945194 has 8 divisors (see below), whose sum is σ = 2045087460. Its totient is φ = 636249376.

The previous prime is 1317945173. The next prime is 1317945221. The reversal of 1317945194 is 4915497131.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1266292225 + 51652969 = 35585^2 + 7187^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11361539 + ... + 11361654.

Almost surely, 2^1317945194 is an apocalyptic number.

1317945194 is a deficient number, since it is larger than the sum of its proper divisors (727142266).

1317945194 is a wasteful number, since it uses less digits than its factorization.

1317945194 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22723224.

The product of its digits is 136080, while the sum is 44.

The square root of 1317945194 is about 36303.5148986982. The cubic root of 1317945194 is about 1096.3918121794.

The spelling of 1317945194 in words is "one billion, three hundred seventeen million, nine hundred forty-five thousand, one hundred ninety-four".