3942538782 has 128 divisors (see below), whose sum is σ = 10320307200. Its totient is φ = 974370816.

The previous prime is 3942538781. The next prime is 3942538793. The reversal of 3942538782 is 2878352493.

It is a super-2 number, since 2×3942538782² = 31087224095148087048, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (51).

Its product of digits (2903040) is a multiple of the sum of its prime divisors (1890).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3942538781) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2496069 + ... + 2497647.

It is an arithmetic number, because the mean of its divisors is an integer number (80627400).

Almost surely, 2^3942538782 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3942538782, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5160153600).

3942538782 is an abundant number, since it is smaller than the sum of its proper divisors (6377768418).

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

3942538782 is a wasteful number, since it uses less digits than its factorization.

3942538782 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1890.

The product of its digits is 2903040, while the sum is 51.

The square root of 3942538782 is about 62789.6391293978. The cubic root of 3942538782 is about 1579.7631944946.

The spelling of 3942538782 in words is "three billion, nine hundred forty-two million, five hundred thirty-eight thousand, seven hundred eighty-two".