2692081021 has 6 divisors (see below), whose sum is σ = 3131604510. Its totient is φ = 2307497976.

The previous prime is 2692081009. The next prime is 2692081031. The reversal of 2692081021 is 1201802962.

It can be written as a sum of positive squares in only one way, i.e., 2675992900 + 16088121 = 51730^2 + 4011^2 .

It is not a de Polignac number, because 2692081021 - 2¹⁹ = 2691556733 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2692081031) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 27470166 + ... + 27470263.

It is an arithmetic number, because the mean of its divisors is an integer number (521934085).

Almost surely, 2^2692081021 is an apocalyptic number.

It is an amenable number.

2692081021 is a deficient number, since it is larger than the sum of its proper divisors (439523489).

2692081021 is an equidigital number, since it uses as much as digits as its factorization.

2692081021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54940443 (or 54940436 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 31.

The square root of 2692081021 is about 51885.2678609256. The cubic root of 2692081021 is about 1391.1139597740.

Adding to 2692081021 its reverse (1201802962), we get a palindrome (3893883983).

The spelling of 2692081021 in words is "two billion, six hundred ninety-two million, eighty-one thousand, twenty-one".