2081157999 has 16 divisors (see below), whose sum is σ = 2880414720. Its totient is φ = 1335170880.

The previous prime is 2081157997. The next prime is 2081158031. The reversal of 2081157999 is 9997511802.

It is not a de Polignac number, because 2081157999 - 2¹ = 2081157997 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2081157997) 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, 45862 + ... + 79155.

It is an arithmetic number, because the mean of its divisors is an integer number (180025920).

Almost surely, 2^2081157999 is an apocalyptic number.

2081157999 is a deficient number, since it is larger than the sum of its proper divisors (799256721).

2081157999 is a wasteful number, since it uses less digits than its factorization.

2081157999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125230.

The product of its (nonzero) digits is 408240, while the sum is 51.

The square root of 2081157999 is about 45619.7106413445. The cubic root of 2081157999 is about 1276.7377047218.

The spelling of 2081157999 in words is "two billion, eighty-one million, one hundred fifty-seven thousand, nine hundred ninety-nine".