1999886692 has 12 divisors (see below), whose sum is σ = 3504405996. Its totient is φ = 998627840.

The previous prime is 1999886677. The next prime is 1999886717. The reversal of 1999886692 is 2966889991.

It can be written as a sum of positive squares in 2 ways, for example, as 461992036 + 1537894656 = 21494^2 + 39216^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 325453 + ... + 331540.

It is an arithmetic number, because the mean of its divisors is an integer number (292033833).

Almost surely, 2^1999886692 is an apocalyptic number.

It is an amenable number.

1999886692 is a deficient number, since it is larger than the sum of its proper divisors (1504519304).

1999886692 is a wasteful number, since it uses less digits than its factorization.

1999886692 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 657758 (or 657756 counting only the distinct ones).

The product of its digits is 30233088, while the sum is 67.

The square root of 1999886692 is about 44720.0927101007. The cubic root of 1999886692 is about 1259.8972562565.

The spelling of 1999886692 in words is "one billion, nine hundred ninety-nine million, eight hundred eighty-six thousand, six hundred ninety-two".