3988257523 has 4 divisors (see below), whose sum is σ = 4161660048. Its totient is φ = 3814855000.

The previous prime is 3988257503. The next prime is 3988257527. The reversal of 3988257523 is 3257528893.

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

It is a cyclic number.

It is not a de Polignac number, because 3988257523 - 2²¹ = 3986160371 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3988257527) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 86701228 + ... + 86701273.

It is an arithmetic number, because the mean of its divisors is an integer number (1040415012).

Almost surely, 2^3988257523 is an apocalyptic number.

3988257523 is a deficient number, since it is larger than the sum of its proper divisors (173402525).

3988257523 is a wasteful number, since it uses less digits than its factorization.

3988257523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173402524.

The product of its digits is 3628800, while the sum is 52.

The square root of 3988257523 is about 63152.6525412829. The cubic root of 3988257523 is about 1585.8461944558.

The spelling of 3988257523 in words is "three billion, nine hundred eighty-eight million, two hundred fifty-seven thousand, five hundred twenty-three".