1986339357 has 12 divisors (see below), whose sum is σ = 2870501920. Its totient is φ = 1323605448.

The previous prime is 1986339343. The next prime is 1986339391. The reversal of 1986339357 is 7539336891.

1986339357 is a `hidden beast` number, since 198 + 63 + 393 + 5 + 7 = 666.

It is not a de Polignac number, because 1986339357 - 2⁶ = 1986339293 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1986339307) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 31033 + ... + 70254.

Almost surely, 2^1986339357 is an apocalyptic number.

It is an amenable number.

1986339357 is a deficient number, since it is larger than the sum of its proper divisors (884162563).

1986339357 is a wasteful number, since it uses less digits than its factorization.

1986339357 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103472 (or 103469 counting only the distinct ones).

The product of its digits is 3674160, while the sum is 54.

The square root of 1986339357 is about 44568.3672238506. The cubic root of 1986339357 is about 1257.0459386685.

The spelling of 1986339357 in words is "one billion, nine hundred eighty-six million, three hundred thirty-nine thousand, three hundred fifty-seven".