1629142879 has 8 divisors (see below), whose sum is σ = 2005099040. Its totient is φ = 1288992096.

The previous prime is 1629142873. The next prime is 1629142883. The reversal of 1629142879 is 9782419261.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1629142879 - 2³ = 1629142871 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1629142871) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8951244 + ... + 8951425.

It is an arithmetic number, because the mean of its divisors is an integer number (250637380).

Almost surely, 2^1629142879 is an apocalyptic number.

1629142879 is a deficient number, since it is larger than the sum of its proper divisors (375956161).

1629142879 is a wasteful number, since it uses less digits than its factorization.

1629142879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17902689.

The product of its digits is 435456, while the sum is 49.

The square root of 1629142879 is about 40362.6421211496. The cubic root of 1629142879 is about 1176.6656031880.

The spelling of 1629142879 in words is "one billion, six hundred twenty-nine million, one hundred forty-two thousand, eight hundred seventy-nine".