29938677931 has 2 divisors, whose sum is σ = 29938677932. Its totient is φ = 29938677930.

The previous prime is 29938677919. The next prime is 29938677949. The reversal of 29938677931 is 13977683992.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 29938677931 - 2¹¹ = 29938675883 is a prime.

It is a super-2 number, since 2×29938677931² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (29938677961) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14969338965 + 14969338966.

It is an arithmetic number, because the mean of its divisors is an integer number (14969338966).

Almost surely, 2^29938677931 is an apocalyptic number.

29938677931 is a deficient number, since it is larger than the sum of its proper divisors (1).

29938677931 is an equidigital number, since it uses as much as digits as its factorization.

29938677931 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 30862944, while the sum is 64.

The spelling of 29938677931 in words is "twenty-nine billion, nine hundred thirty-eight million, six hundred seventy-seven thousand, nine hundred thirty-one".