1642379329 has 2 divisors, whose sum is σ = 1642379330. Its totient is φ = 1642379328.

The previous prime is 1642379279. The next prime is 1642379413. The reversal of 1642379329 is 9239732461.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1464210225 + 178169104 = 38265^2 + 13348^2 .

It is an emirp because it is prime and its reverse (9239732461) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1642379329 - 2⁹ = 1642378817 is a prime.

It is not a weakly prime, because it can be changed into another prime (1642379729) 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 as a sum of consecutive naturals, namely, 821189664 + 821189665.

It is an arithmetic number, because the mean of its divisors is an integer number (821189665).

Almost surely, 2^1642379329 is an apocalyptic number.

It is an amenable number.

1642379329 is a deficient number, since it is larger than the sum of its proper divisors (1).

1642379329 is an equidigital number, since it uses as much as digits as its factorization.

1642379329 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 489888, while the sum is 46.

The square root of 1642379329 is about 40526.2794862790. The cubic root of 1642379329 is about 1179.8437332566.

The spelling of 1642379329 in words is "one billion, six hundred forty-two million, three hundred seventy-nine thousand, three hundred twenty-nine".