2045649519 has 16 divisors (see below), whose sum is σ = 3034280800. Its totient is φ = 1362106368.

The previous prime is 2045649499. The next prime is 2045649521. The reversal of 2045649519 is 9159465402.

It is not a de Polignac number, because 2045649519 - 2¹² = 2045645423 is a prime.

It is a super-2 number, since 2×2045649519² = 8369363909169862722, 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 (2045649569) 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 in 15 ways as a sum of consecutive naturals, for example, 23314 + ... + 68079.

It is an arithmetic number, because the mean of its divisors is an integer number (189642550).

Almost surely, 2^2045649519 is an apocalyptic number.

2045649519 is a deficient number, since it is larger than the sum of its proper divisors (988631281).

2045649519 is an equidigital number, since it uses as much as digits as its factorization.

2045649519 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92231 (or 92225 counting only the distinct ones).

The product of its (nonzero) digits is 388800, while the sum is 45.

The square root of 2045649519 is about 45228.8571489486. The cubic root of 2045649519 is about 1269.4348279895.

The spelling of 2045649519 in words is "two billion, forty-five million, six hundred forty-nine thousand, five hundred nineteen".