29981498618 has 8 divisors (see below), whose sum is σ = 45643475712. Its totient is φ = 14767006716.

The previous prime is 29981498549. The next prime is 29981498641. The reversal of 29981498618 is 81689418992.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×29981498618² (a number of 22 digits) contains 22 as substring.

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, 111871130 + ... + 111871397.

It is an arithmetic number, because the mean of its divisors is an integer number (5705434464).

Almost surely, 2^29981498618 is an apocalyptic number.

29981498618 is a deficient number, since it is larger than the sum of its proper divisors (15661977094).

29981498618 is a wasteful number, since it uses less digits than its factorization.

29981498618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 223742596.

The product of its digits is 17915904, while the sum is 65.

The spelling of 29981498618 in words is "twenty-nine billion, nine hundred eighty-one million, four hundred ninety-eight thousand, six hundred eighteen".