3819662545 has 4 divisors (see below), whose sum is σ = 4583595060. Its totient is φ = 3055730032.

The previous prime is 3819662519. The next prime is 3819662557. The reversal of 3819662545 is 5452669183.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5452669183 = 13 ⋅419436091.

It can be written as a sum of positive squares in 2 ways, for example, as 1507302976 + 2312359569 = 38824^2 + 48087^2 .

It is a cyclic number.

It is not a de Polignac number, because 3819662545 - 2¹⁷ = 3819531473 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

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, 381966250 + ... + 381966259.

It is an arithmetic number, because the mean of its divisors is an integer number (1145898765).

Almost surely, 2^3819662545 is an apocalyptic number.

It is an amenable number.

3819662545 is a deficient number, since it is larger than the sum of its proper divisors (763932515).

3819662545 is an equidigital number, since it uses as much as digits as its factorization.

3819662545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 763932514.

The product of its digits is 1555200, while the sum is 49.

The square root of 3819662545 is about 61803.4185543162. The cubic root of 3819662545 is about 1563.1776322228.

The spelling of 3819662545 in words is "three billion, eight hundred nineteen million, six hundred sixty-two thousand, five hundred forty-five".