1623170473 has 2 divisors, whose sum is σ = 1623170474. Its totient is φ = 1623170472.

The previous prime is 1623170459. The next prime is 1623170491. The reversal of 1623170473 is 3740713261.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1616683264 + 6487209 = 40208^2 + 2547^2 .

It is a cyclic number.

It is not a de Polignac number, because 1623170473 - 2¹⁷ = 1623039401 is a prime.

It is not a weakly prime, because it can be changed into another prime (1623170573) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 811585236 + 811585237.

It is an arithmetic number, because the mean of its divisors is an integer number (811585237).

Almost surely, 2^1623170473 is an apocalyptic number.

It is an amenable number.

1623170473 is a deficient number, since it is larger than the sum of its proper divisors (1).

1623170473 is an equidigital number, since it uses as much as digits as its factorization.

1623170473 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21168, while the sum is 34.

The square root of 1623170473 is about 40288.5898611505. The cubic root of 1623170473 is about 1175.2259648110.

The spelling of 1623170473 in words is "one billion, six hundred twenty-three million, one hundred seventy thousand, four hundred seventy-three".