2162581993 has 8 divisors (see below), whose sum is σ = 2540655936. Its totient is φ = 1814754000.

The previous prime is 2162581991. The next prime is 2162581999. The reversal of 2162581993 is 3991852612.

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 2162581993 - 2¹ = 2162581991 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2162581991) 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, 7561333 + ... + 7561618.

It is an arithmetic number, because the mean of its divisors is an integer number (317581992).

Almost surely, 2^2162581993 is an apocalyptic number.

It is an amenable number.

2162581993 is a deficient number, since it is larger than the sum of its proper divisors (378073943).

2162581993 is a wasteful number, since it uses less digits than its factorization.

2162581993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15122975.

The product of its digits is 233280, while the sum is 46.

The square root of 2162581993 is about 46503.5696801869. The cubic root of 2162581993 is about 1293.1756770058.

The spelling of 2162581993 in words is "two billion, one hundred sixty-two million, five hundred eighty-one thousand, nine hundred ninety-three".