4190978826 has 64 divisors (see below), whose sum is σ = 9598982400. Its totient is φ = 1354408128.

The previous prime is 4190978809. The next prime is 4190978851. The reversal of 4190978826 is 6288790914.

4190978826 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a Curzon 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, 581835 + ... + 588993.

It is an arithmetic number, because the mean of its divisors is an integer number (149984100).

Almost surely, 2^4190978826 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4190978826, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4799491200).

4190978826 is an abundant number, since it is smaller than the sum of its proper divisors (5408003574).

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

4190978826 is a wasteful number, since it uses less digits than its factorization.

4190978826 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7500 (or 7494 counting only the distinct ones).

The product of its (nonzero) digits is 1741824, while the sum is 54.

The square root of 4190978826 is about 64737.7697020835. The cubic root of 4190978826 is about 1612.2726576192.

The spelling of 4190978826 in words is "four billion, one hundred ninety million, nine hundred seventy-eight thousand, eight hundred twenty-six".