29918683749 has 32 divisors (see below), whose sum is σ = 41270394880. Its totient is φ = 19267621632.

The previous prime is 29918683679. The next prime is 29918683789. The reversal of 29918683749 is 94738681992.

It is not a de Polignac number, because 29918683749 - 2⁸ = 29918683493 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 29918683749.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (29918683789) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5518362 + ... + 5523780.

It is an arithmetic number, because the mean of its divisors is an integer number (1289699840).

Almost surely, 2^29918683749 is an apocalyptic number.

It is an amenable number.

29918683749 is a deficient number, since it is larger than the sum of its proper divisors (11351711131).

29918683749 is a wasteful number, since it uses less digits than its factorization.

29918683749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5929.

The product of its digits is 47029248, while the sum is 66.

The spelling of 29918683749 in words is "twenty-nine billion, nine hundred eighteen million, six hundred eighty-three thousand, seven hundred forty-nine".