2181468775 has 12 divisors (see below), whose sum is σ = 2729841400. Its totient is φ = 1729162080.

The previous prime is 2181468767. The next prime is 2181468841. The reversal of 2181468775 is 5778641812.

It is not a de Polignac number, because 2181468775 - 2³ = 2181468767 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 397545 + ... + 402994.

Almost surely, 2^2181468775 is an apocalyptic number.

2181468775 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

2181468775 is a deficient number, since it is larger than the sum of its proper divisors (548372625).

2181468775 is a wasteful number, since it uses less digits than its factorization.

2181468775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 800658 (or 800653 counting only the distinct ones).

The product of its digits is 752640, while the sum is 49.

The square root of 2181468775 is about 46706.1963234002. The cubic root of 2181468775 is about 1296.9293949411.

The spelling of 2181468775 in words is "two billion, one hundred eighty-one million, four hundred sixty-eight thousand, seven hundred seventy-five".