1073211643 has 4 divisors (see below), whose sum is σ = 1226527600. Its totient is φ = 919895688.

The previous prime is 1073211641. The next prime is 1073211679. The reversal of 1073211643 is 3461123701.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3461123701 = 7 ⋅494446243.

It is a cyclic number.

It is not a de Polignac number, because 1073211643 - 2¹ = 1073211641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1073211641) 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, 76657968 + ... + 76657981.

It is an arithmetic number, because the mean of its divisors is an integer number (306631900).

Almost surely, 2^1073211643 is an apocalyptic number.

1073211643 is a deficient number, since it is larger than the sum of its proper divisors (153315957).

1073211643 is an equidigital number, since it uses as much as digits as its factorization.

1073211643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153315956.

The product of its (nonzero) digits is 3024, while the sum is 28.

The square root of 1073211643 is about 32759.9090810704. The cubic root of 1073211643 is about 1023.8314322515.

The spelling of 1073211643 in words is "one billion, seventy-three million, two hundred eleven thousand, six hundred forty-three".