2054491569 has 24 divisors (see below), whose sum is σ = 3250054080. Its totient is φ = 1242869472.

The previous prime is 2054491567. The next prime is 2054491577. The reversal of 2054491569 is 9651944502.

It is not a de Polignac number, because 2054491569 - 2¹ = 2054491567 is a prime.

It is a super-4 number, since 4×2054491569⁴ (a number of 38 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (2054491567) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 141909 + ... + 155714.

It is an arithmetic number, because the mean of its divisors is an integer number (135418920).

Almost surely, 2^2054491569 is an apocalyptic number.

It is an amenable number.

2054491569 is a deficient number, since it is larger than the sum of its proper divisors (1195562511).

2054491569 is a wasteful number, since it uses less digits than its factorization.

2054491569 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 297701 (or 297698 counting only the distinct ones).

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

The square root of 2054491569 is about 45326.4996332168. The cubic root of 2054491569 is about 1271.2611872679.

The spelling of 2054491569 in words is "two billion, fifty-four million, four hundred ninety-one thousand, five hundred sixty-nine".