3855422157 has 8 divisors (see below), whose sum is σ = 5140882176. Its totient is φ = 2570121792.

The previous prime is 3855422143. The next prime is 3855422159. The reversal of 3855422157 is 7512245583.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 3855422157 - 2⁴ = 3855422141 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3855422159) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38373 + ... + 95829.

It is an arithmetic number, because the mean of its divisors is an integer number (642610272).

Almost surely, 2^3855422157 is an apocalyptic number.

It is an amenable number.

3855422157 is a deficient number, since it is larger than the sum of its proper divisors (1285460019).

3855422157 is a wasteful number, since it uses less digits than its factorization.

3855422157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79827.

The product of its digits is 336000, while the sum is 42.

The square root of 3855422157 is about 62092.0458432479. The cubic root of 3855422157 is about 1568.0406348202.

The spelling of 3855422157 in words is "three billion, eight hundred fifty-five million, four hundred twenty-two thousand, one hundred fifty-seven".