629180985 has 16 divisors (see below), whose sum is σ = 1050459264. Its totient is φ = 320973312.

The previous prime is 629180983. The next prime is 629181011. The reversal of 629180985 is 589081926.

It is a happy number.

It is not a de Polignac number, because 629180985 - 2¹ = 629180983 is a prime.

It is not an unprimeable number, because it can be changed into a prime (629180983) 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 15 ways as a sum of consecutive naturals, for example, 911512 + ... + 912201.

It is an arithmetic number, because the mean of its divisors is an integer number (65653704).

Almost surely, 2^629180985 is an apocalyptic number.

It is an amenable number.

629180985 is a deficient number, since it is larger than the sum of its proper divisors (421278279).

629180985 is a wasteful number, since it uses less digits than its factorization.

629180985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1823744.

The product of its (nonzero) digits is 311040, while the sum is 48.

The square root of 629180985 is about 25083.4803207210. The cubic root of 629180985 is about 856.8902401791.

The spelling of 629180985 in words is "six hundred twenty-nine million, one hundred eighty thousand, nine hundred eighty-five".