3781019999 has 2 divisors, whose sum is σ = 3781020000. Its totient is φ = 3781019998.

The previous prime is 3781019993. The next prime is 3781020101. The reversal of 3781019999 is 9999101873.

3781019999 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 3781019999 - 2²⁰ = 3779971423 is a prime.

It is a super-2 number, since 2×3781019999² = 28592224465675920002, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3781019993) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1890509999 + 1890510000.

It is an arithmetic number, because the mean of its divisors is an integer number (1890510000).

Almost surely, 2^3781019999 is an apocalyptic number.

3781019999 is a deficient number, since it is larger than the sum of its proper divisors (1).

3781019999 is an equidigital number, since it uses as much as digits as its factorization.

3781019999 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1102248, while the sum is 56.

The square root of 3781019999 is about 61489.9991787282. Note that the first 3 decimals coincide. The cubic root of 3781019999 is about 1557.8883327372. Note that the first 3 decimals are identical.

The spelling of 3781019999 in words is "three billion, seven hundred eighty-one million, nineteen thousand, nine hundred ninety-nine".