3897785159 has 4 divisors (see below), whose sum is σ = 3898107840. Its totient is φ = 3897462480.

The previous prime is 3897785147. The next prime is 3897785167. The reversal of 3897785159 is 9515877983.

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 3897785159 - 2⁸ = 3897784903 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 (3897785119) 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, 142487 + ... + 167624.

It is an arithmetic number, because the mean of its divisors is an integer number (974526960).

Almost surely, 2^3897785159 is an apocalyptic number.

3897785159 is a deficient number, since it is larger than the sum of its proper divisors (322681).

3897785159 is a wasteful number, since it uses less digits than its factorization.

3897785159 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 322680.

The product of its digits is 19051200, while the sum is 62.

The square root of 3897785159 is about 62432.2445455872. The cubic root of 3897785159 is about 1573.7628863043.

The spelling of 3897785159 in words is "three billion, eight hundred ninety-seven million, seven hundred eighty-five thousand, one hundred fifty-nine".