1629042323 has 4 divisors (see below), whose sum is σ = 1724868360. Its totient is φ = 1533216288.

The previous prime is 1629042313. The next prime is 1629042329. The reversal of 1629042323 is 3232409261.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3232409261 = 71 ⋅45526891.

It is a cyclic number.

It is not a de Polignac number, because 1629042323 - 2¹⁰ = 1629041299 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1629042323.

It is not an unprimeable number, because it can be changed into a prime (1629042329) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 47912993 + ... + 47913026.

It is an arithmetic number, because the mean of its divisors is an integer number (431217090).

Almost surely, 2^1629042323 is an apocalyptic number.

1629042323 is a deficient number, since it is larger than the sum of its proper divisors (95826037).

1629042323 is an equidigital number, since it uses as much as digits as its factorization.

1629042323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95826036.

The product of its (nonzero) digits is 15552, while the sum is 32.

The square root of 1629042323 is about 40361.3964451182. The cubic root of 1629042323 is about 1176.6413934799.

The spelling of 1629042323 in words is "one billion, six hundred twenty-nine million, forty-two thousand, three hundred twenty-three".