1629630885 has 8 divisors (see below), whose sum is σ = 2607409440. Its totient is φ = 869136464.

The previous prime is 1629630869. The next prime is 1629630887. The reversal of 1629630885 is 5880369261.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 1629630885 - 2⁴ = 1629630869 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1629630887) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 54321015 + ... + 54321044.

It is an arithmetic number, because the mean of its divisors is an integer number (325926180).

Almost surely, 2^1629630885 is an apocalyptic number.

1629630885 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1629630885 is a deficient number, since it is larger than the sum of its proper divisors (977778555).

1629630885 is a wasteful number, since it uses less digits than its factorization.

1629630885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108642067.

The product of its (nonzero) digits is 622080, while the sum is 48.

The square root of 1629630885 is about 40368.6869367831. The cubic root of 1629630885 is about 1176.7830806166.

The spelling of 1629630885 in words is "one billion, six hundred twenty-nine million, six hundred thirty thousand, eight hundred eighty-five".