1686413292 has 12 divisors (see below), whose sum is σ = 3934964376. Its totient is φ = 562137760.

The previous prime is 1686413273. The next prime is 1686413297. The reversal of 1686413292 is 2923146861.

1686413292 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (1686413297) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 70267209 + ... + 70267232.

It is an arithmetic number, because the mean of its divisors is an integer number (327913698).

Almost surely, 2^1686413292 is an apocalyptic number.

1686413292 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1686413292 is an abundant number, since it is smaller than the sum of its proper divisors (2248551084).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1686413292 is a wasteful number, since it uses less digits than its factorization.

1686413292 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140534448 (or 140534446 counting only the distinct ones).

The product of its digits is 124416, while the sum is 42.

The square root of 1686413292 is about 41065.9626941826. The cubic root of 1686413292 is about 1190.2951724059.

The spelling of 1686413292 in words is "one billion, six hundred eighty-six million, four hundred thirteen thousand, two hundred ninety-two".