629146931 has 12 divisors (see below), whose sum is σ = 763811088. Its totient is φ = 507545472.

The previous prime is 629146919. The next prime is 629146957. The reversal of 629146931 is 139641926.

It is not a de Polignac number, because 629146931 - 2¹⁸ = 628884787 is a prime.

It is a super-2 number, since 2×629146931² = 791651721573437522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (629146961) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 153476 + ... + 157521.

It is an arithmetic number, because the mean of its divisors is an integer number (63650924).

Almost surely, 2^629146931 is an apocalyptic number.

629146931 is a deficient number, since it is larger than the sum of its proper divisors (134664157).

629146931 is a wasteful number, since it uses less digits than its factorization.

629146931 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 311038 (or 311021 counting only the distinct ones).

The product of its digits is 69984, while the sum is 41.

The square root of 629146931 is about 25082.8014982378. The cubic root of 629146931 is about 856.8747803631.

The spelling of 629146931 in words is "six hundred twenty-nine million, one hundred forty-six thousand, nine hundred thirty-one".