3782978851 has 2 divisors, whose sum is σ = 3782978852. Its totient is φ = 3782978850.

The previous prime is 3782978819. The next prime is 3782978893. The reversal of 3782978851 is 1588792873.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 3782978851 - 2⁵ = 3782978819 is a prime.

It is a super-2 number, since 2×3782978851² = 28621857974226560402, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (3782978651) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1891489425 + 1891489426.

It is an arithmetic number, because the mean of its divisors is an integer number (1891489426).

Almost surely, 2^3782978851 is an apocalyptic number.

3782978851 is a deficient number, since it is larger than the sum of its proper divisors (1).

3782978851 is an equidigital number, since it uses as much as digits as its factorization.

3782978851 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6773760, while the sum is 58.

The square root of 3782978851 is about 61505.9253324426. The cubic root of 3782978851 is about 1558.1573206320.

The spelling of 3782978851 in words is "three billion, seven hundred eighty-two million, nine hundred seventy-eight thousand, eight hundred fifty-one".