1688045026 has 16 divisors (see below), whose sum is σ = 2650785984. Its totient is φ = 804689424.

The previous prime is 1688044961. The next prime is 1688045033. The reversal of 1688045026 is 6205408861.

It is a self number, because there is not a number n which added to its sum of digits gives 1688045026.

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, 45645 + ... + 73888.

It is an arithmetic number, because the mean of its divisors is an integer number (165674124).

Almost surely, 2^1688045026 is an apocalyptic number.

1688045026 is a deficient number, since it is larger than the sum of its proper divisors (962740958).

1688045026 is a wasteful number, since it uses less digits than its factorization.

1688045026 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119865.

The product of its (nonzero) digits is 92160, while the sum is 40.

The square root of 1688045026 is about 41085.8251225407. The cubic root of 1688045026 is about 1190.6789492307.

The spelling of 1688045026 in words is "one billion, six hundred eighty-eight million, forty-five thousand, twenty-six".