3802563781 has 8 divisors (see below), whose sum is σ = 3957246720. Its totient is φ = 3649451568.

The previous prime is 3802563749. The next prime is 3802563799. The reversal of 3802563781 is 1873652083.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3802563781 - 2⁵ = 3802563749 is a prime.

It is a super-2 number, since 2×3802563781² = 28918982617146031922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3803563781) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 387741 + ... + 397426.

It is an arithmetic number, because the mean of its divisors is an integer number (494655840).

Almost surely, 2^3802563781 is an apocalyptic number.

It is an amenable number.

3802563781 is a deficient number, since it is larger than the sum of its proper divisors (154682939).

3802563781 is a wasteful number, since it uses less digits than its factorization.

3802563781 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 785363.

The product of its (nonzero) digits is 241920, while the sum is 43.

The square root of 3802563781 is about 61664.9315332467. The cubic root of 3802563781 is about 1560.8416153686.

The spelling of 3802563781 in words is "three billion, eight hundred two million, five hundred sixty-three thousand, seven hundred eighty-one".