29947985418 has 32 divisors (see below), whose sum is σ = 64889629056. Its totient is φ = 9159582528.

The previous prime is 29947985393. The next prime is 29947985503. The reversal of 29947985418 is 81458974992.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 1136521 + ... + 1162572.

It is an arithmetic number, because the mean of its divisors is an integer number (2027800908).

Almost surely, 2^29947985418 is an apocalyptic number.

29947985418 is an abundant number, since it is smaller than the sum of its proper divisors (34941643638).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

29947985418 is a wasteful number, since it uses less digits than its factorization.

29947985418 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2299278.

The product of its digits is 52254720, while the sum is 66.

The spelling of 29947985418 in words is "twenty-nine billion, nine hundred forty-seven million, nine hundred eighty-five thousand, four hundred eighteen".