2149527769 has 9 divisors (see below), whose sum is σ = 2183573119. Its totient is φ = 2116007320.

The previous prime is 2149527761. The next prime is 2149527773. The reversal of 2149527769 is 9677259412.

The square root of 2149527769 is 46363.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 500193225 + 1649334544 = 22365^2 + 40612^2 .

It is not a de Polignac number, because 2149527769 - 2³ = 2149527761 is a prime.

It is a super-2 number, since 2×2149527769² = 9240939259404234722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2149527761) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 3291447 + ... + 3292099.

Almost surely, 2^2149527769 is an apocalyptic number.

2149527769 is the 46363-rd square number.

2149527769 is the 23182-nd centered octagonal number.

It is an amenable number.

2149527769 is a deficient number, since it is larger than the sum of its proper divisors (34045350).

2149527769 is an frugal number, since it uses more digits than its factorization.

2149527769 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1448 (or 724 counting only the distinct ones).

The product of its digits is 1905120, while the sum is 52.

The cubic root of 2149527769 is about 1290.5683790226.

The spelling of 2149527769 in words is "two billion, one hundred forty-nine million, five hundred twenty-seven thousand, seven hundred sixty-nine".