2047181091 has 4 divisors (see below), whose sum is σ = 2729574792. Its totient is φ = 1364787392.

The previous prime is 2047181083. The next prime is 2047181119. The reversal of 2047181091 is 1901817402.

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 2047181091 - 2³ = 2047181083 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2047189091) 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, 341196846 + ... + 341196851.

It is an arithmetic number, because the mean of its divisors is an integer number (682393698).

Almost surely, 2^2047181091 is an apocalyptic number.

2047181091 is a deficient number, since it is larger than the sum of its proper divisors (682393701).

2047181091 is an equidigital number, since it uses as much as digits as its factorization.

2047181091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 682393700.

The product of its (nonzero) digits is 4032, while the sum is 33.

The square root of 2047181091 is about 45245.7853396314. The cubic root of 2047181091 is about 1269.7515563780.

Adding to 2047181091 its reverse (1901817402), we get a palindrome (3948998493).

The spelling of 2047181091 in words is "two billion, forty-seven million, one hundred eighty-one thousand, ninety-one".