1622943243 has 12 divisors (see below), whose sum is σ = 2404670520. Its totient is φ = 1081822608.

The previous prime is 1622943187. The next prime is 1622943253. The reversal of 1622943243 is 3423492261.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

1622943243 is a `hidden beast` number, since 1 + 622 + 9 + 4 + 3 + 24 + 3 = 666.

It is not a de Polignac number, because 1622943243 - 2¹⁰ = 1622942219 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1622943198 and 1622943207.

It is not an unprimeable number, because it can be changed into a prime (1622943253) 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 11 ways as a sum of consecutive naturals, for example, 205455 + ... + 213207.

It is an arithmetic number, because the mean of its divisors is an integer number (200389210).

Almost surely, 2^1622943243 is an apocalyptic number.

1622943243 is a deficient number, since it is larger than the sum of its proper divisors (781727277).

1622943243 is an frugal number, since it uses more digits than its factorization.

1622943243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15515 (or 7756 counting only the distinct ones).

The product of its digits is 62208, while the sum is 36.

The square root of 1622943243 is about 40285.7697332445. The cubic root of 1622943243 is about 1175.1711217199.

Multiplying 1622943243 by its product of digits (62208), we get a square (100960053260544 = 10047888²).

The spelling of 1622943243 in words is "one billion, six hundred twenty-two million, nine hundred forty-three thousand, two hundred forty-three".