3534783781 has 8 divisors (see below), whose sum is σ = 3575732600. Its totient is φ = 3493990080.

The previous prime is 3534783779. The next prime is 3534783797. The reversal of 3534783781 is 1873874353.

It can be written as a sum of positive squares in 4 ways, for example, as 409414756 + 3125369025 = 20234^2 + 55905^2 .

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 3534783781 - 2¹ = 3534783779 is a prime.

It is a super-2 number, since 2×3534783781² = 24989392756841311922, 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 (3534733781) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7375 + ... + 84403.

It is an arithmetic number, because the mean of its divisors is an integer number (446966575).

Almost surely, 2^3534783781 is an apocalyptic number.

It is an amenable number.

3534783781 is a deficient number, since it is larger than the sum of its proper divisors (40948819).

3534783781 is a wasteful number, since it uses less digits than its factorization.

3534783781 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77559.

The product of its digits is 1693440, while the sum is 49.

The square root of 3534783781 is about 59454.0476418553. The cubic root of 3534783781 is about 1523.3076316461.

The spelling of 3534783781 in words is "three billion, five hundred thirty-four million, seven hundred eighty-three thousand, seven hundred eighty-one".