4013238640 has 40 divisors (see below), whose sum is σ = 9358530480. Its totient is φ = 1600521216.

The previous prime is 4013238611. The next prime is 4013238643. The reversal of 4013238640 is 468323104.

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×4013238640² = 32212168763178099200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4013238643) 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 7 ways as a sum of consecutive naturals, for example, 47470 + ... + 101389.

It is an arithmetic number, because the mean of its divisors is an integer number (233963262).

Almost surely, 2^4013238640 is an apocalyptic number.

4013238640 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4013238640 is an abundant number, since it is smaller than the sum of its proper divisors (5345291840).

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

4013238640 is a wasteful number, since it uses less digits than its factorization.

4013238640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149209 (or 149203 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 31.

The square root of 4013238640 is about 63350.1273874015. The cubic root of 4013238640 is about 1589.1503760845.

The spelling of 4013238640 in words is "four billion, thirteen million, two hundred thirty-eight thousand, six hundred forty".