2189131547 has 2 divisors, whose sum is σ = 2189131548. Its totient is φ = 2189131546.

The previous prime is 2189131543. The next prime is 2189131561. The reversal of 2189131547 is 7451319812.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2189131547 - 2² = 2189131543 is a prime.

It is a super-2 number, since 2×2189131547² = 9584593860141226418, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2189131543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1094565773 + 1094565774.

It is an arithmetic number, because the mean of its divisors is an integer number (1094565774).

Almost surely, 2^2189131547 is an apocalyptic number.

2189131547 is a deficient number, since it is larger than the sum of its proper divisors (1).

2189131547 is an equidigital number, since it uses as much as digits as its factorization.

2189131547 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 60480, while the sum is 41.

The square root of 2189131547 is about 46788.1560547111. The cubic root of 2189131547 is about 1298.4461804272.

The spelling of 2189131547 in words is "two billion, one hundred eighty-nine million, one hundred thirty-one thousand, five hundred forty-seven".