2894762809 has 9 divisors (see below), whose sum is σ = 2920984399. Its totient is φ = 2868775960.

The previous prime is 2894762789. The next prime is 2894762831. The reversal of 2894762809 is 9082674982.

The square root of 2894762809 is 53803.

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., 2633229225 + 261533584 = 51315^2 + 16172^2 .

It is not a de Polignac number, because 2894762809 - 2¹³ = 2894754617 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2894762809.

It is not an unprimeable number, because it can be changed into a prime (2894762009) 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, 9307764 + ... + 9308074.

Almost surely, 2^2894762809 is an apocalyptic number.

2894762809 is the 53803-rd square number.

2894762809 is the 26902-nd centered octagonal number.

It is an amenable number.

2894762809 is a deficient number, since it is larger than the sum of its proper divisors (26221590).

2894762809 is an frugal number, since it uses more digits than its factorization.

2894762809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 968 (or 484 counting only the distinct ones).

The product of its (nonzero) digits is 3483648, while the sum is 55.

The cubic root of 2894762809 is about 1425.1841861441.

It can be divided in two parts, 2894 and 762809, that added together give a triangular number (765703 = T₁₂₃₇).

The spelling of 2894762809 in words is "two billion, eight hundred ninety-four million, seven hundred sixty-two thousand, eight hundred nine".