191602683149 has 4 divisors (see below), whose sum is σ = 191603915580. Its totient is φ = 191601450720.

The previous prime is 191602683131. The next prime is 191602683157. The reversal of 191602683149 is 941386206191.

191602683149 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 941386206191 = 109 ⋅8636570699.

It can be written as a sum of positive squares in 2 ways, for example, as 24934620649 + 166668062500 = 157907^2 + 408250^2 .

It is a cyclic number.

It is not a de Polignac number, because 191602683149 - 2¹² = 191602679053 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 191602683097 and 191602683106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (191602683199) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 342482 + ... + 707459.

It is an arithmetic number, because the mean of its divisors is an integer number (47900978895).

Almost surely, 2^191602683149 is an apocalyptic number.

It is an amenable number.

191602683149 is a deficient number, since it is larger than the sum of its proper divisors (1232431).

191602683149 is a wasteful number, since it uses less digits than its factorization.

191602683149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1232430.

The product of its (nonzero) digits is 559872, while the sum is 50.

The spelling of 191602683149 in words is "one hundred ninety-one billion, six hundred two million, six hundred eighty-three thousand, one hundred forty-nine".