1688145082 has 32 divisors (see below), whose sum is σ = 2784523392. Its totient is φ = 762775104.

The previous prime is 1688145077. The next prime is 1688145097. The reversal of 1688145082 is 2805418861.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 807843 + ... + 809929.

It is an arithmetic number, because the mean of its divisors is an integer number (87016356).

Almost surely, 2^1688145082 is an apocalyptic number.

1688145082 is a deficient number, since it is larger than the sum of its proper divisors (1096378310).

1688145082 is a wasteful number, since it uses less digits than its factorization.

1688145082 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2742.

The product of its (nonzero) digits is 122880, while the sum is 43.

The square root of 1688145082 is about 41087.0427507262. The cubic root of 1688145082 is about 1190.7024739229.

The spelling of 1688145082 in words is "one billion, six hundred eighty-eight million, one hundred forty-five thousand, eighty-two".