3765320987 has 2 divisors, whose sum is σ = 3765320988. Its totient is φ = 3765320986.

The previous prime is 3765320983. The next prime is 3765321017. The reversal of 3765320987 is 7890235673.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 3765320987 - 2² = 3765320983 is a prime.

It is not a weakly prime, because it can be changed into another prime (3765320983) 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 as a sum of consecutive naturals, namely, 1882660493 + 1882660494.

It is an arithmetic number, because the mean of its divisors is an integer number (1882660494).

Almost surely, 2^3765320987 is an apocalyptic number.

3765320987 is a deficient number, since it is larger than the sum of its proper divisors (1).

3765320987 is an equidigital number, since it uses as much as digits as its factorization.

3765320987 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1905120, while the sum is 50.

The square root of 3765320987 is about 61362.2113926804. The cubic root of 3765320987 is about 1555.7291944345.

The spelling of 3765320987 in words is "three billion, seven hundred sixty-five million, three hundred twenty thousand, nine hundred eighty-seven".