4128486634 has 4 divisors (see below), whose sum is σ = 6192729954. Its totient is φ = 2064243316.

The previous prime is 4128486623. The next prime is 4128486647. The reversal of 4128486634 is 4366848214.

It is a happy number.

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., 4019179609 + 109307025 = 63397^2 + 10455^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1032121657 + ... + 1032121660.

Almost surely, 2^4128486634 is an apocalyptic number.

4128486634 is a deficient number, since it is larger than the sum of its proper divisors (2064243320).

4128486634 is a wasteful number, since it uses less digits than its factorization.

4128486634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2064243319.

The product of its digits is 884736, while the sum is 46.

The square root of 4128486634 is about 64253.3005689202. The cubic root of 4128486634 is about 1604.2188962625.

The spelling of 4128486634 in words is "four billion, one hundred twenty-eight million, four hundred eighty-six thousand, six hundred thirty-four".