1689190371 has 36 divisors (see below), whose sum is σ = 2744365624. Its totient is φ = 999915840.

The previous prime is 1689190369. The next prime is 1689190381. The reversal of 1689190371 is 1730919861.

1689190371 is a `hidden beast` number, since 16 + 89 + 190 + 371 = 666.

It is not a de Polignac number, because 1689190371 - 2¹ = 1689190369 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1689190381) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 28791 + ... + 64863.

Almost surely, 2^1689190371 is an apocalyptic number.

1689190371 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1689190371 is a deficient number, since it is larger than the sum of its proper divisors (1055175253).

1689190371 is a wasteful number, since it uses less digits than its factorization.

1689190371 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36144 (or 36130 counting only the distinct ones).

The product of its (nonzero) digits is 81648, while the sum is 45.

The square root of 1689190371 is about 41099.7612036858. The cubic root of 1689190371 is about 1190.9481817536.

The spelling of 1689190371 in words is "one billion, six hundred eighty-nine million, one hundred ninety thousand, three hundred seventy-one".