29948738831 has 16 divisors (see below), whose sum is σ = 33050792448. Its totient is φ = 26911248000.

The previous prime is 29948738783. The next prime is 29948738843. The reversal of 29948738831 is 13883784992.

It is a cyclic number.

It is not a de Polignac number, because 29948738831 - 2¹⁰ = 29948737807 is a prime.

It is a super-2 number, since 2×29948738831² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (29948738531) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 423356 + ... + 489006.

It is an arithmetic number, because the mean of its divisors is an integer number (2065674528).

Almost surely, 2^29948738831 is an apocalyptic number.

29948738831 is a deficient number, since it is larger than the sum of its proper divisors (3102053617).

29948738831 is a wasteful number, since it uses less digits than its factorization.

29948738831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66142.

The product of its digits is 20901888, while the sum is 62.

The spelling of 29948738831 in words is "twenty-nine billion, nine hundred forty-eight million, seven hundred thirty-eight thousand, eight hundred thirty-one".