1202197643 has 4 divisors (see below), whose sum is σ = 1202382168. Its totient is φ = 1202013120.

The previous prime is 1202197637. The next prime is 1202197651. The reversal of 1202197643 is 3467912021.

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 1202197643 - 2¹⁴ = 1202181259 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1202197343) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 82118 + ... + 95643.

It is an arithmetic number, because the mean of its divisors is an integer number (300595542).

Almost surely, 2^1202197643 is an apocalyptic number.

1202197643 is a deficient number, since it is larger than the sum of its proper divisors (184525).

1202197643 is an equidigital number, since it uses as much as digits as its factorization.

1202197643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 184524.

The product of its (nonzero) digits is 18144, while the sum is 35.

The square root of 1202197643 is about 34672.7218862321. The cubic root of 1202197643 is about 1063.3068802906.

The spelling of 1202197643 in words is "one billion, two hundred two million, one hundred ninety-seven thousand, six hundred forty-three".