137813108194 has 4 divisors (see below), whose sum is σ = 206719662294. Its totient is φ = 68906554096.

The previous prime is 137813108179. The next prime is 137813108207. The reversal of 137813108194 is 491801318731.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 491801318731 = 3049 ⋅161299219.

It can be written as a sum of positive squares in only one way, i.e., 72794738025 + 65018370169 = 269805^2 + 254987^2 .

It is a super-2 number, since 2×137813108194² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34453277047 + ... + 34453277050.

Almost surely, 2^137813108194 is an apocalyptic number.

137813108194 is a deficient number, since it is larger than the sum of its proper divisors (68906554100).

137813108194 is an equidigital number, since it uses as much as digits as its factorization.

137813108194 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68906554099.

The product of its (nonzero) digits is 145152, while the sum is 46.

The spelling of 137813108194 in words is "one hundred thirty-seven billion, eight hundred thirteen million, one hundred eight thousand, one hundred ninety-four".