2197938297943 has 4 divisors (see below), whose sum is σ = 2203588525320. Its totient is φ = 2192288070568.

The previous prime is 2197938297937. The next prime is 2197938297959. The reversal of 2197938297943 is 3497928397912.

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

It is a cyclic number.

It is not a de Polignac number, because 2197938297943 - 2²¹ = 2197936200791 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2197938297913) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2825113105 + ... + 2825113882.

It is an arithmetic number, because the mean of its divisors is an integer number (550897131330).

Almost surely, 2^{2197938297943} is an apocalyptic number.

2197938297943 is a deficient number, since it is larger than the sum of its proper divisors (5650227377).

2197938297943 is an equidigital number, since it uses as much as digits as its factorization.

2197938297943 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5650227376.

The product of its digits is 370355328, while the sum is 73.

The spelling of 2197938297943 in words is "two trillion, one hundred ninety-seven billion, nine hundred thirty-eight million, two hundred ninety-seven thousand, nine hundred forty-three".