8186403745 has 16 divisors (see below), whose sum is σ = 11136162240. Its totient is φ = 5727167424.

The previous prime is 8186403653. The next prime is 8186403751. The reversal of 8186403745 is 5473046818.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 8186403745 - 2⁹ = 8186403233 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 8186403695 and 8186403704.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3313099 + ... + 3315568.

It is an arithmetic number, because the mean of its divisors is an integer number (696010140).

Almost surely, 2^8186403745 is an apocalyptic number.

It is an amenable number.

8186403745 is a deficient number, since it is larger than the sum of its proper divisors (2949758495).

8186403745 is a wasteful number, since it uses less digits than its factorization.

8186403745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6628704.

The product of its (nonzero) digits is 645120, while the sum is 46.

The square root of 8186403745 is about 90478.7474769628. The cubic root of 8186403745 is about 2015.4145362350.

The spelling of 8186403745 in words is "eight billion, one hundred eighty-six million, four hundred three thousand, seven hundred forty-five".