3543786643 has 4 divisors (see below), whose sum is σ = 3601881568. Its totient is φ = 3485691720.

The previous prime is 3543786641. The next prime is 3543786667. The reversal of 3543786643 is 3466873453.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 3543786643 - 2¹ = 3543786641 is a prime.

It is a super-2 number, since 2×3543786643² = 25116847542210418898, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3543786641) 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, 29047371 + ... + 29047492.

It is an arithmetic number, because the mean of its divisors is an integer number (900470392).

Almost surely, 2^3543786643 is an apocalyptic number.

3543786643 is a deficient number, since it is larger than the sum of its proper divisors (58094925).

3543786643 is an equidigital number, since it uses as much as digits as its factorization.

3543786643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58094924.

The product of its digits is 4354560, while the sum is 49.

The square root of 3543786643 is about 59529.7122704285. The cubic root of 3543786643 is about 1524.5997900630.

The spelling of 3543786643 in words is "three billion, five hundred forty-three million, seven hundred eighty-six thousand, six hundred forty-three".