1689937127 has 2 divisors, whose sum is σ = 1689937128. Its totient is φ = 1689937126.

The previous prime is 1689937099. The next prime is 1689937133. The reversal of 1689937127 is 7217399861.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1689937127 - 2⁶ = 1689937063 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1689937147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 844968563 + 844968564.

It is an arithmetic number, because the mean of its divisors is an integer number (844968564).

Almost surely, 2^1689937127 is an apocalyptic number.

1689937127 is a deficient number, since it is larger than the sum of its proper divisors (1).

1689937127 is an equidigital number, since it uses as much as digits as its factorization.

1689937127 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1143072, while the sum is 53.

The square root of 1689937127 is about 41108.8448755253. The cubic root of 1689937127 is about 1191.1236537221.

The spelling of 1689937127 in words is "one billion, six hundred eighty-nine million, nine hundred thirty-seven thousand, one hundred twenty-seven".