634981430 has 16 divisors (see below), whose sum is σ = 1169547984. Its totient is φ = 248085600.

The previous prime is 634981411. The next prime is 634981439. The reversal of 634981430 is 34189436.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (634981439) 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, 737921 + ... + 738780.

It is an arithmetic number, because the mean of its divisors is an integer number (73096749).

Almost surely, 2^634981430 is an apocalyptic number.

634981430 is a deficient number, since it is larger than the sum of its proper divisors (534566554).

634981430 is a wasteful number, since it uses less digits than its factorization.

634981430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1476751.

The product of its (nonzero) digits is 62208, while the sum is 38.

The square root of 634981430 is about 25198.8378700288. The cubic root of 634981430 is about 859.5154246871.

The spelling of 634981430 in words is "six hundred thirty-four million, nine hundred eighty-one thousand, four hundred thirty".