1686141369 has 24 divisors (see below), whose sum is σ = 2683272384. Its totient is φ = 1011780000.

The previous prime is 1686141283. The next prime is 1686141389. The reversal of 1686141369 is 9631416861.

1686141369 is a `hidden beast` number, since 16 + 8 + 614 + 13 + 6 + 9 = 666.

It is not a de Polignac number, because 1686141369 - 2⁹ = 1686140857 is a prime.

It is a super-2 number, since 2×1686141369² = 5686145432506388322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1686141389) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 74317 + ... + 94314.

It is an arithmetic number, because the mean of its divisors is an integer number (111803016).

Almost surely, 2^1686141369 is an apocalyptic number.

It is an amenable number.

1686141369 is a deficient number, since it is larger than the sum of its proper divisors (997131015).

1686141369 is a wasteful number, since it uses less digits than its factorization.

1686141369 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168749 (or 168746 counting only the distinct ones).

The product of its digits is 186624, while the sum is 45.

The square root of 1686141369 is about 41062.6517531442. The cubic root of 1686141369 is about 1190.2311932232.

The spelling of 1686141369 in words is "one billion, six hundred eighty-six million, one hundred forty-one thousand, three hundred sixty-nine".