5840140681 has 4 divisors (see below), whose sum is σ = 5840324500. Its totient is φ = 5839956864.

The previous prime is 5840140667. The next prime is 5840140687. The reversal of 5840140681 is 1860410485.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1671501456 + 4168639225 = 40884^2 + 64565^2 .

It is a cyclic number.

It is not a de Polignac number, because 5840140681 - 2¹³ = 5840132489 is a prime.

It is a super-2 number, since 2×5840140681² = 68214486347742287522, which contains 22 as substring.

It is a deceptive number, since it divides R_5840140680.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 5840140681.

It is not an unprimeable number, because it can be changed into a prime (5840140687) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30636 + ... + 112333.

It is an arithmetic number, because the mean of its divisors is an integer number (1460081125).

Almost surely, 2^5840140681 is an apocalyptic number.

5840140681 is the 40849-th nonagonal number.

It is an amenable number.

5840140681 is a deficient number, since it is larger than the sum of its proper divisors (183819).

5840140681 is a wasteful number, since it uses less digits than its factorization.

5840140681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 183818.

The product of its (nonzero) digits is 30720, while the sum is 37.

The square root of 5840140681 is about 76420.8131401387. The cubic root of 5840140681 is about 1800.8371292358.

The spelling of 5840140681 in words is "five billion, eight hundred forty million, one hundred forty thousand, six hundred eighty-one".