1628068929 has 4 divisors (see below), whose sum is σ = 2170758576. Its totient is φ = 1085379284.

The previous prime is 1628068921. The next prime is 1628068997. The reversal of 1628068929 is 9298608261.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1628068929 - 2³ = 1628068921 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1628068921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 271344819 + ... + 271344824.

It is an arithmetic number, because the mean of its divisors is an integer number (542689644).

Almost surely, 2^1628068929 is an apocalyptic number.

It is an amenable number.

1628068929 is a deficient number, since it is larger than the sum of its proper divisors (542689647).

1628068929 is an equidigital number, since it uses as much as digits as its factorization.

1628068929 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 542689646.

The product of its (nonzero) digits is 746496, while the sum is 51.

The square root of 1628068929 is about 40349.3361655430. The cubic root of 1628068929 is about 1176.4069891196.

The spelling of 1628068929 in words is "one billion, six hundred twenty-eight million, sixty-eight thousand, nine hundred twenty-nine".