47813191 has 4 divisors (see below), whose sum is σ = 49355584. Its totient is φ = 46270800.

The previous prime is 47813189. The next prime is 47813201. The reversal of 47813191 is 19131874.

47813191 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.

It is a cyclic number.

It is not a de Polignac number, because 47813191 - 2¹ = 47813189 is a prime.

It is a super-2 number, since 2×47813191² = 4572202467204962, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47813131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 771150 + ... + 771211.

It is an arithmetic number, because the mean of its divisors is an integer number (12338896).

Almost surely, 2^47813191 is an apocalyptic number.

47813191 is a deficient number, since it is larger than the sum of its proper divisors (1542393).

47813191 is a wasteful number, since it uses less digits than its factorization.

47813191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1542392.

The product of its digits is 6048, while the sum is 34.

The square root of 47813191 is about 6914.7083091046. The cubic root of 47813191 is about 362.9520410601.

The spelling of 47813191 in words is "forty-seven million, eight hundred thirteen thousand, one hundred ninety-one".