2187546913 has 2 divisors, whose sum is σ = 2187546914. Its totient is φ = 2187546912.

The previous prime is 2187546887. The next prime is 2187546917. The reversal of 2187546913 is 3196457812.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2101947409 + 85599504 = 45847^2 + 9252^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2187546913 is a prime.

It is a super-2 number, since 2×2187546913² = 9570722993151659138, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2187546917) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1093773456 + 1093773457.

It is an arithmetic number, because the mean of its divisors is an integer number (1093773457).

Almost surely, 2^2187546913 is an apocalyptic number.

It is an amenable number.

2187546913 is a deficient number, since it is larger than the sum of its proper divisors (1).

2187546913 is an equidigital number, since it uses as much as digits as its factorization.

2187546913 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 362880, while the sum is 46.

The square root of 2187546913 is about 46771.2188530511. The cubic root of 2187546913 is about 1298.1328052241.

The spelling of 2187546913 in words is "two billion, one hundred eighty-seven million, five hundred forty-six thousand, nine hundred thirteen".