3847742245 has 4 divisors (see below), whose sum is σ = 4617290700. Its totient is φ = 3078193792.

The previous prime is 3847742237. The next prime is 3847742267. The reversal of 3847742245 is 5422477483.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 928177156 + 2919565089 = 30466^2 + 54033^2 .

It is a cyclic number.

It is not a de Polignac number, because 3847742245 - 2³ = 3847742237 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3847742195 and 3847742204.

It is a congruent 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, 384774220 + ... + 384774229.

It is an arithmetic number, because the mean of its divisors is an integer number (1154322675).

Almost surely, 2^3847742245 is an apocalyptic number.

It is an amenable number.

3847742245 is a deficient number, since it is larger than the sum of its proper divisors (769548455).

3847742245 is an equidigital number, since it uses as much as digits as its factorization.

3847742245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 769548454.

The product of its digits is 1505280, while the sum is 46.

The square root of 3847742245 is about 62030.1720536063. The cubic root of 3847742245 is about 1566.9987758030.

The spelling of 3847742245 in words is "three billion, eight hundred forty-seven million, seven hundred forty-two thousand, two hundred forty-five".