2185281464 has 16 divisors (see below), whose sum is σ = 4097965920. Its totient is φ = 1092490560.

The previous prime is 2185281463. The next prime is 2185281467. The reversal of 2185281464 is 4641825812.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2185281463) 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, 65132 + ... + 92804.

It is an arithmetic number, because the mean of its divisors is an integer number (256122870).

Almost surely, 2^2185281464 is an apocalyptic number.

It is an amenable number.

2185281464 is a deficient number, since it is larger than the sum of its proper divisors (1912684456).

2185281464 is a wasteful number, since it uses less digits than its factorization.

2185281464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37550 (or 37546 counting only the distinct ones).

The product of its digits is 122880, while the sum is 41.

The square root of 2185281464 is about 46746.9941707486. The cubic root of 2185281464 is about 1297.6845299701.

The spelling of 2185281464 in words is "two billion, one hundred eighty-five million, two hundred eighty-one thousand, four hundred sixty-four".