2281681432 has 16 divisors (see below), whose sum is σ = 4285841760. Its totient is φ = 1138790304.

The previous prime is 2281681399. The next prime is 2281681463. The reversal of 2281681432 is 2341861822.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 2281681391 and 2281681400.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 251568 + ... + 260479.

It is an arithmetic number, because the mean of its divisors is an integer number (267865110).

Almost surely, 2^2281681432 is an apocalyptic number.

It is an amenable number.

2281681432 is a deficient number, since it is larger than the sum of its proper divisors (2004160328).

2281681432 is a wasteful number, since it uses less digits than its factorization.

2281681432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 512610 (or 512606 counting only the distinct ones).

The product of its digits is 36864, while the sum is 37.

The square root of 2281681432 is about 47766.9491594345. The cubic root of 2281681432 is about 1316.4923386425.

The spelling of 2281681432 in words is "two billion, two hundred eighty-one million, six hundred eighty-one thousand, four hundred thirty-two".