3924568157 has 4 divisors (see below), whose sum is σ = 3946251036. Its totient is φ = 3902885280.

The previous prime is 3924568127. The next prime is 3924568181. The reversal of 3924568157 is 7518654293.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7518654293 = 19 ⋅395718647.

It can be written as a sum of positive squares in 2 ways, for example, as 813048196 + 3111519961 = 28514^2 + 55781^2 .

It is a cyclic number.

It is not a de Polignac number, because 3924568157 - 2¹⁴ = 3924551773 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3924568127) 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 3 ways as a sum of consecutive naturals, for example, 10841168 + ... + 10841529.

It is an arithmetic number, because the mean of its divisors is an integer number (986562759).

Almost surely, 2^3924568157 is an apocalyptic number.

It is an amenable number.

3924568157 is a deficient number, since it is larger than the sum of its proper divisors (21682879).

3924568157 is a wasteful number, since it uses less digits than its factorization.

3924568157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21682878.

The product of its digits is 1814400, while the sum is 50.

The square root of 3924568157 is about 62646.3738535600. The cubic root of 3924568157 is about 1577.3592802295.

The spelling of 3924568157 in words is "three billion, nine hundred twenty-four million, five hundred sixty-eight thousand, one hundred fifty-seven".