2529639749 has 32 divisors (see below), whose sum is σ = 3185414400. Its totient is φ = 1996142400.

The previous prime is 2529639743. The next prime is 2529639779. The reversal of 2529639749 is 9479369252.

2529639749 = T₄₂₂ + T₄₂₃ + ... + T₂₄₇₉.

It is a happy number.

It is not a de Polignac number, because 2529639749 - 2⁸ = 2529639493 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2529639694 and 2529639703.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2529639743) 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 31 ways as a sum of consecutive naturals, for example, 3080759 + ... + 3081579.

It is an arithmetic number, because the mean of its divisors is an integer number (99544200).

Almost surely, 2^2529639749 is an apocalyptic number.

It is an amenable number.

2529639749 is a deficient number, since it is larger than the sum of its proper divisors (655774651).

2529639749 is an equidigital number, since it uses as much as digits as its factorization.

2529639749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1546 (or 1532 counting only the distinct ones).

The product of its digits is 7348320, while the sum is 56.

The square root of 2529639749 is about 50295.5241447984. The cubic root of 2529639749 is about 1362.5513936678.

The spelling of 2529639749 in words is "two billion, five hundred twenty-nine million, six hundred thirty-nine thousand, seven hundred forty-nine".