2081311494 has 64 divisors (see below), whose sum is σ = 4384385280. Its totient is φ = 657970560.

The previous prime is 2081311493. The next prime is 2081311523. The reversal of 2081311494 is 4941131802.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2081311493) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1715232 + ... + 1716444.

It is an arithmetic number, because the mean of its divisors is an integer number (68506020).

Almost surely, 2^2081311494 is an apocalyptic number.

2081311494 is an abundant number, since it is smaller than the sum of its proper divisors (2303073786).

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

2081311494 is a wasteful number, since it uses less digits than its factorization.

2081311494 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1445.

The product of its (nonzero) digits is 6912, while the sum is 33.

The square root of 2081311494 is about 45621.3929423467. The cubic root of 2081311494 is about 1276.7690923813.

The spelling of 2081311494 in words is "two billion, eighty-one million, three hundred eleven thousand, four hundred ninety-four".