2492743681 has 8 divisors (see below), whose sum is σ = 2513516544. Its totient is φ = 2471988960.

The previous prime is 2492743621. The next prime is 2492743699. The reversal of 2492743681 is 1863472942.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2492743681 - 2¹³ = 2492735489 is a prime.

It is a super-2 number, since 2×2492743681² = 12427542118330859522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2492743621) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 488061 + ... + 493141.

It is an arithmetic number, because the mean of its divisors is an integer number (314189568).

Almost surely, 2^2492743681 is an apocalyptic number.

It is an amenable number.

2492743681 is a deficient number, since it is larger than the sum of its proper divisors (20772863).

2492743681 is a wasteful number, since it uses less digits than its factorization.

2492743681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9071.

The product of its digits is 580608, while the sum is 46.

The square root of 2492743681 is about 49927.3840792806. The cubic root of 2492743681 is about 1355.8944237886.

The spelling of 2492743681 in words is "two billion, four hundred ninety-two million, seven hundred forty-three thousand, six hundred eighty-one".