2197960921846 has 4 divisors (see below), whose sum is σ = 3296941382772. Its totient is φ = 1098980460922.

The previous prime is 2197960921829. The next prime is 2197960921847. The reversal of 2197960921846 is 6481290697912.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2197960921847) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 549490230460 + ... + 549490230463.

It is an arithmetic number, because the mean of its divisors is an integer number (824235345693).

Almost surely, 2^{2197960921846} is an apocalyptic number.

2197960921846 is a deficient number, since it is larger than the sum of its proper divisors (1098980460926).

2197960921846 is a wasteful number, since it uses less digits than its factorization.

2197960921846 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1098980460925.

The product of its (nonzero) digits is 23514624, while the sum is 64.

The spelling of 2197960921846 in words is "two trillion, one hundred ninety-seven billion, nine hundred sixty million, nine hundred twenty-one thousand, eight hundred forty-six".