3421781788 has 6 divisors (see below), whose sum is σ = 5988118136. Its totient is φ = 1710890892.

The previous prime is 3421781773. The next prime is 3421781789. The reversal of 3421781788 is 8871871243.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3421781789) 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, 427722720 + ... + 427722727.

Almost surely, 2^3421781788 is an apocalyptic number.

It is an amenable number.

3421781788 is a deficient number, since it is larger than the sum of its proper divisors (2566336348).

3421781788 is a wasteful number, since it uses less digits than its factorization.

3421781788 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 855445451 (or 855445449 counting only the distinct ones).

The product of its digits is 602112, while the sum is 49.

The square root of 3421781788 is about 58495.9980511488. The cubic root of 3421781788 is about 1506.8988571290.

The spelling of 3421781788 in words is "three billion, four hundred twenty-one million, seven hundred eighty-one thousand, seven hundred eighty-eight".