2140531813 has 8 divisors (see below), whose sum is σ = 2505988800. Its totient is φ = 1789991520.

The previous prime is 2140531801. The next prime is 2140531819. The reversal of 2140531813 is 3181350412.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 2140531813 - 2¹³ = 2140523621 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2140531819) 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, 3728863 + ... + 3729436.

It is an arithmetic number, because the mean of its divisors is an integer number (313248600).

Almost surely, 2^2140531813 is an apocalyptic number.

It is an amenable number.

2140531813 is a deficient number, since it is larger than the sum of its proper divisors (365456987).

2140531813 is an equidigital number, since it uses as much as digits as its factorization.

2140531813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7458347.

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 2140531813 is about 46265.8817380583. The cubic root of 2140531813 is about 1288.7654822165.

The spelling of 2140531813 in words is "two billion, one hundred forty million, five hundred thirty-one thousand, eight hundred thirteen".