4523155638 has 64 divisors (see below), whose sum is σ = 9540191232. Its totient is φ = 1428134400.

The previous prime is 4523155603. The next prime is 4523155717. The reversal of 4523155638 is 8365513254.

It is a self number, because there is not a number n which added to its sum of digits gives 4523155638.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1368588 + ... + 1371888.

It is an arithmetic number, because the mean of its divisors is an integer number (149065488).

Almost surely, 2^4523155638 is an apocalyptic number.

4523155638 is an abundant number, since it is smaller than the sum of its proper divisors (5017035594).

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

4523155638 is a wasteful number, since it uses less digits than its factorization.

4523155638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3509.

The product of its digits is 432000, while the sum is 42.

The square root of 4523155638 is about 67254.4098033727. The cubic root of 4523155638 is about 1653.7905674865.

The spelling of 4523155638 in words is "four billion, five hundred twenty-three million, one hundred fifty-five thousand, six hundred thirty-eight".