2019082949 has 4 divisors (see below), whose sum is σ = 2174397036. Its totient is φ = 1863768864.

The previous prime is 2019082909. The next prime is 2019082963. The reversal of 2019082949 is 9492809102.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 498628900 + 1520454049 = 22330^2 + 38993^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2019082949 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2019082909) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 77657024 + ... + 77657049.

It is an arithmetic number, because the mean of its divisors is an integer number (543599259).

Almost surely, 2^2019082949 is an apocalyptic number.

It is an amenable number.

2019082949 is a deficient number, since it is larger than the sum of its proper divisors (155314087).

2019082949 is a wasteful number, since it uses less digits than its factorization.

2019082949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155314086.

The product of its (nonzero) digits is 93312, while the sum is 44.

The square root of 2019082949 is about 44934.2068918547. The cubic root of 2019082949 is about 1263.9155404513.

The spelling of 2019082949 in words is "two billion, nineteen million, eighty-two thousand, nine hundred forty-nine".