4018919220972 has 96 divisors (see below), whose sum is σ = 10516685168640. Its totient is φ = 1327164834240.

The previous prime is 4018919220893. The next prime is 4018919221003. The reversal of 4018919220972 is 2790229198104.

It is a happy number.

4018919220972 is a `hidden beast` number, since 4 + 0 + 189 + 192 + 209 + 72 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

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, 9265738 + ... + 9689774.

It is an arithmetic number, because the mean of its divisors is an integer number (109548803840).

Almost surely, 2^{4018919220972} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4018919220972, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5258342584320).

4018919220972 is an abundant number, since it is smaller than the sum of its proper divisors (6497765947668).

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

4018919220972 is a wasteful number, since it uses less digits than its factorization.

4018919220972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 424868 (or 424860 counting only the distinct ones).

The product of its (nonzero) digits is 1306368, while the sum is 54.

The spelling of 4018919220972 in words is "four trillion, eighteen billion, nine hundred nineteen million, two hundred twenty thousand, nine hundred seventy-two".