2681387544 has 32 divisors (see below), whose sum is σ = 7312875840. Its totient is φ = 812541600.

The previous prime is 2681387539. The next prime is 2681387561. The reversal of 2681387544 is 4457831862.

It is a super-2 number, since 2×2681387544² = 14379678322236703872, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2681387493 and 2681387502.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5078122 + ... + 5078649.

It is an arithmetic number, because the mean of its divisors is an integer number (228527370).

Almost surely, 2^2681387544 is an apocalyptic number.

2681387544 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

2681387544 is an abundant number, since it is smaller than the sum of its proper divisors (4631488296).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2681387544 is a wasteful number, since it uses less digits than its factorization.

It is an anagram of its base 9 representation: 2681387544 = (6825447183)₉.

2681387544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10156791 (or 10156787 counting only the distinct ones).

The product of its digits is 1290240, while the sum is 48.

The square root of 2681387544 is about 51782.1160633669. The cubic root of 2681387544 is about 1389.2695891680.

The spelling of 2681387544 in words is "two billion, six hundred eighty-one million, three hundred eighty-seven thousand, five hundred forty-four".