191923038 has 12 divisors (see below), whose sum is σ = 415833288. Its totient is φ = 63974340.

The previous prime is 191923037. The next prime is 191923049. The reversal of 191923038 is 830329191.

191923038 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 191922993 and 191923011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (191923037) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5331178 + ... + 5331213.

It is an arithmetic number, because the mean of its divisors is an integer number (34652774).

Almost surely, 2^191923038 is an apocalyptic number.

191923038 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

191923038 is an abundant number, since it is smaller than the sum of its proper divisors (223910250).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

191923038 is a wasteful number, since it uses less digits than its factorization.

191923038 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10662399 (or 10662396 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 36.

The square root of 191923038 is about 13853.6290552331. The cubic root of 191923038 is about 576.8227355912.

The spelling of 191923038 in words is "one hundred ninety-one million, nine hundred twenty-three thousand, thirty-eight".