2681857464 has 64 divisors (see below), whose sum is σ = 7876794240. Its totient is φ = 750168960.

The previous prime is 2681857433. The next prime is 2681857469. The reversal of 2681857464 is 4647581862.

It is a super-2 number, since 2×2681857464² = 14384718914425022592, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2681857469) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 387282 + ... + 394145.

It is an arithmetic number, because the mean of its divisors is an integer number (123074910).

Almost surely, 2^2681857464 is an apocalyptic number.

2681857464 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

2681857464 is an abundant number, since it is smaller than the sum of its proper divisors (5194936776).

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

2681857464 is a wasteful number, since it uses less digits than its factorization.

2681857464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 781460 (or 781456 counting only the distinct ones).

The product of its digits is 2580480, while the sum is 51.

The square root of 2681857464 is about 51786.6533384809. The cubic root of 2681857464 is about 1389.3507421061.

The spelling of 2681857464 in words is "two billion, six hundred eighty-one million, eight hundred fifty-seven thousand, four hundred sixty-four".