4445081838 has 12 divisors (see below), whose sum is σ = 9631010688. Its totient is φ = 1481693940.

The previous prime is 4445081833. The next prime is 4445081887. The reversal of 4445081838 is 8381805444.

4445081838 is a `hidden beast` number, since 44 + 450 + 81 + 83 + 8 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 4445081793 and 4445081802.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4445081831) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 123474478 + ... + 123474513.

It is an arithmetic number, because the mean of its divisors is an integer number (802584224).

Almost surely, 2^4445081838 is an apocalyptic number.

4445081838 is an abundant number, since it is smaller than the sum of its proper divisors (5185928850).

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

4445081838 is a wasteful number, since it uses less digits than its factorization.

4445081838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 246948999 (or 246948996 counting only the distinct ones).

The product of its (nonzero) digits is 491520, while the sum is 45.

The square root of 4445081838 is about 66671.4469469502. The cubic root of 4445081838 is about 1644.2199765141.

The spelling of 4445081838 in words is "four billion, four hundred forty-five million, eighty-one thousand, eight hundred thirty-eight".