20086185749 has 16 divisors (see below), whose sum is σ = 24170340480. Its totient is φ = 16306194240.

The previous prime is 20086185731. The next prime is 20086185781. The reversal of 20086185749 is 94758168002.

It is a de Polignac number, because none of the positive numbers 2^k-20086185749 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20086185697 and 20086185706.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20086185709) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 531419 + ... + 567959.

It is an arithmetic number, because the mean of its divisors is an integer number (1510646280).

Almost surely, 2^20086185749 is an apocalyptic number.

It is an amenable number.

20086185749 is a deficient number, since it is larger than the sum of its proper divisors (4084154731).

20086185749 is a wasteful number, since it uses less digits than its factorization.

20086185749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40700.

The product of its (nonzero) digits is 967680, while the sum is 50.

The spelling of 20086185749 in words is "twenty billion, eighty-six million, one hundred eighty-five thousand, seven hundred forty-nine".