2690643229 has 4 divisors (see below), whose sum is σ = 2783424060. Its totient is φ = 2597862400.

The previous prime is 2690643217. The next prime is 2690643239. The reversal of 2690643229 is 9223460962.

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 2152496025 + 538147204 = 46395^2 + 23198^2 .

It is a cyclic number.

It is not a de Polignac number, because 2690643229 - 2²⁹ = 2153772317 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2690643239) 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, 46390372 + ... + 46390429.

It is an arithmetic number, because the mean of its divisors is an integer number (695856015).

Almost surely, 2^2690643229 is an apocalyptic number.

2690643229 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

It is an amenable number.

2690643229 is a deficient number, since it is larger than the sum of its proper divisors (92780831).

2690643229 is an equidigital number, since it uses as much as digits as its factorization.

2690643229 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92780830.

The product of its (nonzero) digits is 279936, while the sum is 43.

The square root of 2690643229 is about 51871.4105167770. The cubic root of 2690643229 is about 1390.8662593654.

The spelling of 2690643229 in words is "two billion, six hundred ninety million, six hundred forty-three thousand, two hundred twenty-nine".