628631491492 has 12 divisors (see below), whose sum is σ = 1110785742976. Its totient is φ = 311264136360.

The previous prime is 628631491483. The next prime is 628631491529. The reversal of 628631491492 is 294194136826.

628631491492 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 762901884 + ... + 762902707.

Almost surely, 2^628631491492 is an apocalyptic number.

It is an amenable number.

628631491492 is a deficient number, since it is larger than the sum of its proper divisors (482154251484).

628631491492 is a wasteful number, since it uses less digits than its factorization.

628631491492 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1525804698 (or 1525804696 counting only the distinct ones).

The product of its digits is 4478976, while the sum is 55.

It can be divided in two parts, 6286314 and 91492, that added together give a triangular number (6377806 = T₃₅₇₁).

The spelling of 628631491492 in words is "six hundred twenty-eight billion, six hundred thirty-one million, four hundred ninety-one thousand, four hundred ninety-two".