3773890643 has 2 divisors, whose sum is σ = 3773890644. Its totient is φ = 3773890642.

The previous prime is 3773890621. The next prime is 3773890651. The reversal of 3773890643 is 3460983773.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 3773890643 - 2¹² = 3773886547 is a prime.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 3773890591 and 3773890600.

It is not a weakly prime, because it can be changed into another prime (3773890243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1886945321 + 1886945322.

It is an arithmetic number, because the mean of its divisors is an integer number (1886945322).

Almost surely, 2^3773890643 is an apocalyptic number.

3773890643 is a deficient number, since it is larger than the sum of its proper divisors (1).

3773890643 is an equidigital number, since it uses as much as digits as its factorization.

3773890643 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2286144, while the sum is 50.

The square root of 3773890643 is about 61432.0001546425. Note that the first 3 decimals coincide. The cubic root of 3773890643 is about 1556.9085505019.

The spelling of 3773890643 in words is "three billion, seven hundred seventy-three million, eight hundred ninety thousand, six hundred forty-three".