3842016257 has 4 divisors (see below), whose sum is σ = 3842246100. Its totient is φ = 3841786416.

The previous prime is 3842016197. The next prime is 3842016259. The reversal of 3842016257 is 7526102483.

It is a happy number.

It is a Cunningham number, because it is equal to 61984²+1.

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 1097199376 + 2744816881 = 33124^2 + 52391^2 .

It is a cyclic number.

It is not a de Polignac number, because 3842016257 - 2⁸ = 3842016001 is a prime.

It is a super-2 number, since 2×3842016257² = 29522177838104580098, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3842016257.

It is not an unprimeable number, because it can be changed into a prime (3842016259) 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, 87698 + ... + 123995.

It is an arithmetic number, because the mean of its divisors is an integer number (960561525).

Almost surely, 2^3842016257 is an apocalyptic number.

It is an amenable number.

3842016257 is a deficient number, since it is larger than the sum of its proper divisors (229843).

3842016257 is a wasteful number, since it uses less digits than its factorization.

3842016257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 229842.

The product of its (nonzero) digits is 80640, while the sum is 38.

The square root of 3842016257 is about 61984.0000080666. Note that the first 5 decimals coincide. The cubic root of 3842016257 is about 1566.2210841818.

The spelling of 3842016257 in words is "three billion, eight hundred forty-two million, sixteen thousand, two hundred fifty-seven".