19292990986 has 8 divisors (see below), whose sum is σ = 28951855524. Its totient is φ = 9642372480.

The previous prime is 19292990947. The next prime is 19292991017. The reversal of 19292990986 is 68909929291.

It can be written as a sum of positive squares in 2 ways, for example, as 19097858025 + 195132961 = 138195^2 + 13969^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

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, 2055655 + ... + 2065018.

Almost surely, 2^19292990986 is an apocalyptic number.

19292990986 is a deficient number, since it is larger than the sum of its proper divisors (9658864538).

19292990986 is a wasteful number, since it uses less digits than its factorization.

19292990986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4123016.

The product of its (nonzero) digits is 11337408, while the sum is 64.

The spelling of 19292990986 in words is "nineteen billion, two hundred ninety-two million, nine hundred ninety thousand, nine hundred eighty-six".