2097381881 has 8 divisors (see below), whose sum is σ = 2400553920. Its totient is φ = 1795096368.

The previous prime is 2097381791. The next prime is 2097381931. The reversal of 2097381881 is 1881837902.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2097381881 is a prime.

It is a super-2 number, since 2×2097381881² = 8798021509494196322, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2097380881) 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, 216551 + ... + 226028.

It is an arithmetic number, because the mean of its divisors is an integer number (300069240).

Almost surely, 2^2097381881 is an apocalyptic number.

It is an amenable number.

2097381881 is a deficient number, since it is larger than the sum of its proper divisors (303172039).

2097381881 is an equidigital number, since it uses as much as digits as its factorization.

2097381881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 443263.

The product of its (nonzero) digits is 193536, while the sum is 47.

The square root of 2097381881 is about 45797.1820202947. The cubic root of 2097381881 is about 1280.0467677004.

The spelling of 2097381881 in words is "two billion, ninety-seven million, three hundred eighty-one thousand, eight hundred eighty-one".