4128613213 has 4 divisors (see below), whose sum is σ = 4128848668. Its totient is φ = 4128377760.

The previous prime is 4128613199. The next prime is 4128613249. The reversal of 4128613213 is 3123168214.

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 370678009 + 3757935204 = 19253^2 + 61302^2 .

It is a cyclic number.

It is not a de Polignac number, because 4128613213 - 2¹³ = 4128605021 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 (4128614213) 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, 89106 + ... + 127267.

It is an arithmetic number, because the mean of its divisors is an integer number (1032212167).

Almost surely, 2^4128613213 is an apocalyptic number.

It is an amenable number.

4128613213 is a deficient number, since it is larger than the sum of its proper divisors (235455).

4128613213 is a wasteful number, since it uses less digits than its factorization.

4128613213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 235454.

The product of its digits is 6912, while the sum is 31.

The square root of 4128613213 is about 64254.2855613538. The cubic root of 4128613213 is about 1604.2352911603.

The spelling of 4128613213 in words is "four billion, one hundred twenty-eight million, six hundred thirteen thousand, two hundred thirteen".