1681838706 has 16 divisors (see below), whose sum is σ = 3509924544. Its totient is φ = 536238384.

The previous prime is 1681838689. The next prime is 1681838759. The reversal of 1681838706 is 6078381861.

1681838706 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6093481 + ... + 6093756.

It is an arithmetic number, because the mean of its divisors is an integer number (219370284).

Almost surely, 2^1681838706 is an apocalyptic number.

1681838706 is an abundant number, since it is smaller than the sum of its proper divisors (1828085838).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1681838706 is a wasteful number, since it uses less digits than its factorization.

1681838706 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12187265.

The product of its (nonzero) digits is 387072, while the sum is 48.

The square root of 1681838706 is about 41010.2268464831. The cubic root of 1681838706 is about 1189.2179278617.

The spelling of 1681838706 in words is "one billion, six hundred eighty-one million, eight hundred thirty-eight thousand, seven hundred six".