4278135238 has 32 divisors (see below), whose sum is σ = 7473078144. Its totient is φ = 1818826752.

The previous prime is 4278135203. The next prime is 4278135299. The reversal of 4278135238 is 8325318724.

It is a super-2 number, since 2×4278135238² = 36604882229234633288, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 4278135194 and 4278135203.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 82195 + ... + 123742.

It is an arithmetic number, because the mean of its divisors is an integer number (233533692).

Almost surely, 2^4278135238 is an apocalyptic number.

4278135238 is a deficient number, since it is larger than the sum of its proper divisors (3194942906).

4278135238 is a wasteful number, since it uses less digits than its factorization.

4278135238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 206016.

The product of its digits is 322560, while the sum is 43.

The square root of 4278135238 is about 65407.4555230518. The cubic root of 4278135238 is about 1623.3724438638.

The spelling of 4278135238 in words is "four billion, two hundred seventy-eight million, one hundred thirty-five thousand, two hundred thirty-eight".