3854905819 has 2 divisors, whose sum is σ = 3854905820. Its totient is φ = 3854905818.

The previous prime is 3854905811. The next prime is 3854905871. The reversal of 3854905819 is 9185094583.

It is an a-pointer prime, because the next prime (3854905871) can be obtained adding 3854905819 to its sum of digits (52).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 3854905819 - 2³ = 3854905811 is a prime.

It is a super-2 number, since 2×3854905819² = 29720597746720121522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (3854905811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1927452909 + 1927452910.

It is an arithmetic number, because the mean of its divisors is an integer number (1927452910).

Almost surely, 2^3854905819 is an apocalyptic number.

3854905819 is a deficient number, since it is larger than the sum of its proper divisors (1).

3854905819 is an equidigital number, since it uses as much as digits as its factorization.

3854905819 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1555200, while the sum is 52.

The square root of 3854905819 is about 62087.8878606770. The cubic root of 3854905819 is about 1567.9706316681.

The spelling of 3854905819 in words is "three billion, eight hundred fifty-four million, nine hundred five thousand, eight hundred nineteen".