1628146633 has 2 divisors, whose sum is σ = 1628146634. Its totient is φ = 1628146632.

The previous prime is 1628146579. The next prime is 1628146643. The reversal of 1628146633 is 3366418261.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1618211529 + 9935104 = 40227^2 + 3152^2 .

It is an emirp because it is prime and its reverse (3366418261) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1628146633 - 2²⁵ = 1594592201 is a prime.

It is a super-2 number, since 2×1628146633² = 5301722917098473378, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1628146643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 814073316 + 814073317.

It is an arithmetic number, because the mean of its divisors is an integer number (814073317).

Almost surely, 2^1628146633 is an apocalyptic number.

It is an amenable number.

1628146633 is a deficient number, since it is larger than the sum of its proper divisors (1).

1628146633 is an equidigital number, since it uses as much as digits as its factorization.

1628146633 is an evil number, because the sum of its binary digits is even.

The product of its digits is 124416, while the sum is 40.

The square root of 1628146633 is about 40350.2990447407. The cubic root of 1628146633 is about 1176.4257045587.

The spelling of 1628146633 in words is "one billion, six hundred twenty-eight million, one hundred forty-six thousand, six hundred thirty-three".