3766974821 has 2 divisors, whose sum is σ = 3766974822. Its totient is φ = 3766974820.

The previous prime is 3766974811. The next prime is 3766974853. The reversal of 3766974821 is 1284796673.

3766974821 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2488912321 + 1278062500 = 49889^2 + 35750^2 .

It is a cyclic number.

It is not a de Polignac number, because 3766974821 - 2²⁶ = 3699865957 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3766974811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1883487410 + 1883487411.

It is an arithmetic number, because the mean of its divisors is an integer number (1883487411).

Almost surely, 2^3766974821 is an apocalyptic number.

It is an amenable number.

3766974821 is a deficient number, since it is larger than the sum of its proper divisors (1).

3766974821 is an equidigital number, since it uses as much as digits as its factorization.

3766974821 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3048192, while the sum is 53.

The square root of 3766974821 is about 61375.6859106275. The cubic root of 3766974821 is about 1555.9569343127.

The spelling of 3766974821 in words is "three billion, seven hundred sixty-six million, nine hundred seventy-four thousand, eight hundred twenty-one".