4259128634 has 4 divisors (see below), whose sum is σ = 6388692954. Its totient is φ = 2129564316.

The previous prime is 4259128633. The next prime is 4259128637. The reversal of 4259128634 is 4368219524.

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

It can be written as a sum of positive squares in only one way, i.e., 4205911609 + 53217025 = 64853^2 + 7295^2 .

It is not an unprimeable number, because it can be changed into a prime (4259128633) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1064782157 + ... + 1064782160.

Almost surely, 2^4259128634 is an apocalyptic number.

4259128634 is a deficient number, since it is larger than the sum of its proper divisors (2129564320).

4259128634 is a wasteful number, since it uses less digits than its factorization.

4259128634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2129564319.

The product of its digits is 414720, while the sum is 44.

The square root of 4259128634 is about 65261.9999233857. Note that the first 4 decimals coincide. The cubic root of 4259128634 is about 1620.9648058184.

The spelling of 4259128634 in words is "four billion, two hundred fifty-nine million, one hundred twenty-eight thousand, six hundred thirty-four".