1629129039 has 4 divisors (see below), whose sum is σ = 2172172056. Its totient is φ = 1086086024.

The previous prime is 1629129037. The next prime is 1629129043. The reversal of 1629129039 is 9309219261.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1629129039 - 2¹ = 1629129037 is a prime.

It is a super-2 number, since 2×1629129039² = 5308122851426127042, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1629129037) 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, 271521504 + ... + 271521509.

It is an arithmetic number, because the mean of its divisors is an integer number (543043014).

Almost surely, 2^1629129039 is an apocalyptic number.

1629129039 is a deficient number, since it is larger than the sum of its proper divisors (543043017).

1629129039 is an equidigital number, since it uses as much as digits as its factorization.

1629129039 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 543043016.

The product of its (nonzero) digits is 52488, while the sum is 42.

The square root of 1629129039 is about 40362.4706751210. The cubic root of 1629129039 is about 1176.6622711500.

The spelling of 1629129039 in words is "one billion, six hundred twenty-nine million, one hundred twenty-nine thousand, thirty-nine".