191385338 has 8 divisors (see below), whose sum is σ = 287167188. Its totient is φ = 95662944.

The previous prime is 191385331. The next prime is 191385353. The reversal of 191385338 is 833583191.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 190246849 + 1138489 = 13793^2 + 1067^2 .

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

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 191385295 and 191385304.

It is not an unprimeable number, because it can be changed into a prime (191385331) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5681 + ... + 20372.

Almost surely, 2^191385338 is an apocalyptic number.

191385338 is a deficient number, since it is larger than the sum of its proper divisors (95781850).

191385338 is a wasteful number, since it uses less digits than its factorization.

191385338 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29728.

The product of its digits is 77760, while the sum is 41.

The square root of 191385338 is about 13834.2089763022. The cubic root of 191385338 is about 576.2835477824.

The spelling of 191385338 in words is "one hundred ninety-one million, three hundred eighty-five thousand, three hundred thirty-eight".