191054745 has 72 divisors (see below), whose sum is σ = 387137088. Its totient is φ = 85380480.

The previous prime is 191054741. The next prime is 191054761. The reversal of 191054745 is 547450191.

191054745 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 191054745 - 2² = 191054741 is a prime.

It is not an unprimeable number, because it can be changed into a prime (191054741) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 1172034 + ... + 1172196.

It is an arithmetic number, because the mean of its divisors is an integer number (5376904).

Almost surely, 2^191054745 is an apocalyptic number.

191054745 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

191054745 is an abundant number, since it is smaller than the sum of its proper divisors (196082343).

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

191054745 is a wasteful number, since it uses less digits than its factorization.

191054745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 303 (or 239 counting only the distinct ones).

The product of its (nonzero) digits is 25200, while the sum is 36.

The square root of 191054745 is about 13822.2554237722. The cubic root of 191054745 is about 575.9515385299.

The spelling of 191054745 in words is "one hundred ninety-one million, fifty-four thousand, seven hundred forty-five".