191503045 has 16 divisors (see below), whose sum is σ = 247918320. Its totient is φ = 141466624.

The previous prime is 191503043. The next prime is 191503061. The reversal of 191503045 is 540305191.

191503045 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 40360609 + 151142436 = 6353^2 + 12294^2 .

It is a cyclic number.

It is not a de Polignac number, because 191503045 - 2¹ = 191503043 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (191503043) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16750 + ... + 25759.

It is an arithmetic number, because the mean of its divisors is an integer number (15494895).

Almost surely, 2^191503045 is an apocalyptic number.

It is an amenable number.

191503045 is a deficient number, since it is larger than the sum of its proper divisors (56415275).

191503045 is a wasteful number, since it uses less digits than its factorization.

191503045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42584.

The product of its (nonzero) digits is 2700, while the sum is 28.

The square root of 191503045 is about 13838.4625229828. The cubic root of 191503045 is about 576.4016667333.

The spelling of 191503045 in words is "one hundred ninety-one million, five hundred three thousand, forty-five".