2019834981 has 8 divisors (see below), whose sum is σ = 2992348160. Its totient is φ = 1346556636.

The previous prime is 2019834967. The next prime is 2019835043. The reversal of 2019834981 is 1894389102.

It is not a de Polignac number, because 2019834981 - 2¹⁴ = 2019818597 is a prime.

It is a super-2 number, since 2×2019834981² = 8159466700942540722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2019834941) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37404325 + ... + 37404378.

It is an arithmetic number, because the mean of its divisors is an integer number (374043520).

Almost surely, 2^2019834981 is an apocalyptic number.

It is an amenable number.

2019834981 is a deficient number, since it is larger than the sum of its proper divisors (972513179).

2019834981 is an equidigital number, since it uses as much as digits as its factorization.

2019834981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74808712 (or 74808706 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 45.

The square root of 2019834981 is about 44942.5742587138. The cubic root of 2019834981 is about 1264.0724412112.

The spelling of 2019834981 in words is "two billion, nineteen million, eight hundred thirty-four thousand, nine hundred eighty-one".