2180841497 has 4 divisors (see below), whose sum is σ = 2182126800. Its totient is φ = 2179556196.

The previous prime is 2180841463. The next prime is 2180841511. The reversal of 2180841497 is 7941480812.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2180841497 - 2⁶ = 2180841433 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2180841697) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 640103 + ... + 643500.

It is an arithmetic number, because the mean of its divisors is an integer number (545531700).

Almost surely, 2^2180841497 is an apocalyptic number.

It is an amenable number.

2180841497 is a deficient number, since it is larger than the sum of its proper divisors (1285303).

2180841497 is a wasteful number, since it uses less digits than its factorization.

2180841497 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1285302.

The product of its (nonzero) digits is 129024, while the sum is 44.

The square root of 2180841497 is about 46699.4806930441. The cubic root of 2180841497 is about 1296.8050730048.

The spelling of 2180841497 in words is "two billion, one hundred eighty million, eight hundred forty-one thousand, four hundred ninety-seven".