2197840461 has 16 divisors (see below), whose sum is σ = 3168854784. Its totient is φ = 1349694464.

The previous prime is 2197840459. The next prime is 2197840549. The reversal of 2197840461 is 1640487912.

It is not a de Polignac number, because 2197840461 - 2¹ = 2197840459 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2197840261) 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, 456060 + ... + 460853.

It is an arithmetic number, because the mean of its divisors is an integer number (198053424).

Almost surely, 2^2197840461 is an apocalyptic number.

It is an amenable number.

2197840461 is a deficient number, since it is larger than the sum of its proper divisors (971014323).

2197840461 is a wasteful number, since it uses less digits than its factorization.

2197840461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 916980.

The product of its (nonzero) digits is 96768, while the sum is 42.

The square root of 2197840461 is about 46881.1311830250. The cubic root of 2197840461 is about 1300.1657502663.

The spelling of 2197840461 in words is "two billion, one hundred ninety-seven million, eight hundred forty thousand, four hundred sixty-one".