629136931 has 4 divisors (see below), whose sum is σ = 631476000. Its totient is φ = 626797864.

The previous prime is 629136889. The next prime is 629136941. The reversal of 629136931 is 139631926.

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 629136931 - 2¹⁹ = 628612643 is a prime.

It is a super-2 number, since 2×629136931² = 791626555896197522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (629136941) 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 3 ways as a sum of consecutive naturals, for example, 1169131 + ... + 1169668.

It is an arithmetic number, because the mean of its divisors is an integer number (157869000).

Almost surely, 2^629136931 is an apocalyptic number.

629136931 is a deficient number, since it is larger than the sum of its proper divisors (2339069).

629136931 is a wasteful number, since it uses less digits than its factorization.

629136931 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2339068.

The product of its digits is 52488, while the sum is 40.

The square root of 629136931 is about 25082.6021576710. The cubic root of 629136931 is about 856.8702404627.

The spelling of 629136931 in words is "six hundred twenty-nine million, one hundred thirty-six thousand, nine hundred thirty-one".