2092788009 has 135 divisors (see below), whose sum is σ = 3759239253. Its totient is φ = 1159411968.

The previous prime is 2092788007. The next prime is 2092788013. The reversal of 2092788009 is 9008872902.

The square root of 2092788009 is 45747.

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

It can be written as a sum of positive squares in 4 ways, for example, as 18896409 + 2073891600 = 4347^2 + 45540^2 .

It is not a de Polignac number, because 2092788009 - 2¹ = 2092788007 is a prime.

It is a super-2 number, since 2×2092788009² = 8759523301228368162, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2092788007) by changing a digit.

It is a polite number, since it can be written in 134 ways as a sum of consecutive naturals, for example, 90990772 + ... + 90990794.

Almost surely, 2^2092788009 is an apocalyptic number.

2092788009 is the 45747-th square number.

2092788009 is the 22874-th centered octagonal number.

It is an amenable number.

2092788009 is a deficient number, since it is larger than the sum of its proper divisors (1666451244).

2092788009 is a wasteful number, since it uses less digits than its factorization.

2092788009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118 (or 56 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 45.

The cubic root of 2092788009 is about 1279.1115271946. Note that the first 3 decimals are identical.

The spelling of 2092788009 in words is "two billion, ninety-two million, seven hundred eighty-eight thousand, nine".