3926782061 has 4 divisors (see below), whose sum is σ = 3927040224. Its totient is φ = 3926523900.

The previous prime is 3926782051. The next prime is 3926782081. The reversal of 3926782061 is 1602876293.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1602876293 = 2693 ⋅595201.

It is a cyclic number.

It is not a de Polignac number, because 3926782061 - 2¹⁰ = 3926781037 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3926782051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 104735 + ... + 137196.

It is an arithmetic number, because the mean of its divisors is an integer number (981760056).

Almost surely, 2^3926782061 is an apocalyptic number.

It is an amenable number.

3926782061 is a deficient number, since it is larger than the sum of its proper divisors (258163).

3926782061 is a wasteful number, since it uses less digits than its factorization.

3926782061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 258162.

The product of its (nonzero) digits is 217728, while the sum is 44.

The square root of 3926782061 is about 62664.0412118465. The cubic root of 3926782061 is about 1577.6558279798.

The spelling of 3926782061 in words is "three billion, nine hundred twenty-six million, seven hundred eighty-two thousand, sixty-one".