1686357034 has 12 divisors (see below), whose sum is σ = 2613768642. Its totient is φ = 815978280.

The previous prime is 1686357011. The next prime is 1686357059. The reversal of 1686357034 is 4307536861.

It can be written as a sum of positive squares in only one way, i.e., 970634025 + 715723009 = 31155^2 + 26753^2 .

It is a super-2 number, since 2×1686357034² = 5687600092242554312, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 436777 + ... + 440620.

Almost surely, 2^1686357034 is an apocalyptic number.

1686357034 is a deficient number, since it is larger than the sum of its proper divisors (927411608).

1686357034 is an equidigital number, since it uses as much as digits as its factorization.

1686357034 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 877461 (or 877430 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 43.

The square root of 1686357034 is about 41065.2777173125. The cubic root of 1686357034 is about 1190.2819363522.

The spelling of 1686357034 in words is "one billion, six hundred eighty-six million, three hundred fifty-seven thousand, thirty-four".