19986487035 has 32 divisors (see below), whose sum is σ = 32762161152. Its totient is φ = 10399635840.

The previous prime is 19986487033. The next prime is 19986487039. The reversal of 19986487035 is 53078468991.

It is not a de Polignac number, because 19986487035 - 2¹ = 19986487033 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 19986487035.

It is not an unprimeable number, because it can be changed into a prime (19986487033) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 178770 + ... + 268200.

It is an arithmetic number, because the mean of its divisors is an integer number (1023817536).

Almost surely, 2^19986487035 is an apocalyptic number.

19986487035 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

19986487035 is a deficient number, since it is larger than the sum of its proper divisors (12775674117).

19986487035 is a wasteful number, since it uses less digits than its factorization.

19986487035 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89803.

The product of its (nonzero) digits is 13063680, while the sum is 60.

The spelling of 19986487035 in words is "nineteen billion, nine hundred eighty-six million, four hundred eighty-seven thousand, thirty-five".