1622146873 has 2 divisors, whose sum is σ = 1622146874. Its totient is φ = 1622146872.

The previous prime is 1622146781. The next prime is 1622146913. The reversal of 1622146873 is 3786412261.

It is an a-pointer prime, because the next prime (1622146913) can be obtained adding 1622146873 to its sum of digits (40).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1051510329 + 570636544 = 32427^2 + 23888^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1622146873 is a prime.

It is not a weakly prime, because it can be changed into another prime (1622146373) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 811073436 + 811073437.

It is an arithmetic number, because the mean of its divisors is an integer number (811073437).

Almost surely, 2^1622146873 is an apocalyptic number.

It is an amenable number.

1622146873 is a deficient number, since it is larger than the sum of its proper divisors (1).

1622146873 is an equidigital number, since it uses as much as digits as its factorization.

1622146873 is an evil number, because the sum of its binary digits is even.

The product of its digits is 96768, while the sum is 40.

The square root of 1622146873 is about 40275.8845092197. The cubic root of 1622146873 is about 1174.9788734394.

The spelling of 1622146873 in words is "one billion, six hundred twenty-two million, one hundred forty-six thousand, eight hundred seventy-three".