2694751921 has 27 divisors (see below), whose sum is σ = 2943442593. Its totient is φ = 2466810720.

The previous prime is 2694751883. The next prime is 2694752009. The reversal of 2694751921 is 1291574962.

The square root of 2694751921 is 51911.

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 59367025 + 2635384896 = 7705^2 + 51336^2 .

It is not a de Polignac number, because 2694751921 - 2¹¹ = 2694749873 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2694751121) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 44176231 + ... + 44176291.

Almost surely, 2^2694751921 is an apocalyptic number.

2694751921 is the 51911-st square number.

2694751921 is the 25956-th centered octagonal number.

It is an amenable number.

2694751921 is a deficient number, since it is larger than the sum of its proper divisors (248690672).

2694751921 is an frugal number, since it uses more digits than its factorization.

2694751921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 242 (or 121 counting only the distinct ones).

The product of its digits is 272160, while the sum is 46.

The cubic root of 2694751921 is about 1391.5738639843.

The spelling of 2694751921 in words is "two billion, six hundred ninety-four million, seven hundred fifty-one thousand, nine hundred twenty-one".