1689027702938 has 4 divisors (see below), whose sum is σ = 2533541554410. Its totient is φ = 844513851468.

The previous prime is 1689027702919. The next prime is 1689027703007. The reversal of 1689027702938 is 8392077209861.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1522378419409 + 166649283529 = 1233847^2 + 408227^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 422256925733 + ... + 422256925736.

Almost surely, 2^{1689027702938} is an apocalyptic number.

1689027702938 is a deficient number, since it is larger than the sum of its proper divisors (844513851472).

1689027702938 is an equidigital number, since it uses as much as digits as its factorization.

1689027702938 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 844513851471.

The product of its (nonzero) digits is 18289152, while the sum is 62.

The spelling of 1689027702938 in words is "one trillion, six hundred eighty-nine billion, twenty-seven million, seven hundred two thousand, nine hundred thirty-eight".