4015065438 has 12 divisors (see below), whose sum is σ = 8699308488. Its totient is φ = 1338355140.

The previous prime is 4015065437. The next prime is 4015065469. The reversal of 4015065438 is 8345605104.

It is a happy number.

It is a super-2 number, since 2×4015065438² = 32241500942844263688, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4015065437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 111529578 + ... + 111529613.

It is an arithmetic number, because the mean of its divisors is an integer number (724942374).

Almost surely, 2^4015065438 is an apocalyptic number.

4015065438 is an abundant number, since it is smaller than the sum of its proper divisors (4684243050).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

4015065438 is a wasteful number, since it uses less digits than its factorization.

4015065438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 223059199 (or 223059196 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 36.

The square root of 4015065438 is about 63364.5440131940. The cubic root of 4015065438 is about 1589.3914628655.

The spelling of 4015065438 in words is "four billion, fifteen million, sixty-five thousand, four hundred thirty-eight".