2690808129 has 9 divisors (see below), whose sum is σ = 3886947649. Its totient is φ = 1793768340.

The previous prime is 2690808121. The next prime is 2690808143. The reversal of 2690808129 is 9218080962.

The square root of 2690808129 is 51873.

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

It is a tau number, because it is divible by the number of its divisors (9).

It is not a de Polignac number, because 2690808129 - 2³ = 2690808121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2690808121) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 146974 + ... + 164264.

Almost surely, 2^2690808129 is an apocalyptic number.

2690808129 is the 51873-rd square number.

2690808129 is the 25937-th centered octagonal number.

It is an amenable number.

2690808129 is a deficient number, since it is larger than the sum of its proper divisors (1196139520).

2690808129 is an frugal number, since it uses more digits than its factorization.

2690808129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34588 (or 17294 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 45.

The cubic root of 2690808129 is about 1390.8946725417.

The spelling of 2690808129 in words is "two billion, six hundred ninety million, eight hundred eight thousand, one hundred twenty-nine".