29674789981 has 2 divisors, whose sum is σ = 29674789982. Its totient is φ = 29674789980.

The previous prime is 29674789979. The next prime is 29674790039. The reversal of 29674789981 is 18998747692.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21063877956 + 8610912025 = 145134^2 + 92795^2 .

It is a cyclic number.

It is not a de Polignac number, because 29674789981 - 2¹ = 29674789979 is a prime.

It is a super-2 number, since 2×29674789981² (a number of 22 digits) contains 22 as substring.

Together with 29674789979, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 29674789981.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (29674789181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14837394990 + 14837394991.

It is an arithmetic number, because the mean of its divisors is an integer number (14837394991).

Almost surely, 2^29674789981 is an apocalyptic number.

It is an amenable number.

29674789981 is a deficient number, since it is larger than the sum of its proper divisors (1).

29674789981 is an equidigital number, since it uses as much as digits as its factorization.

29674789981 is an evil number, because the sum of its binary digits is even.

The product of its digits is 109734912, while the sum is 70.

The spelling of 29674789981 in words is "twenty-nine billion, six hundred seventy-four million, seven hundred eighty-nine thousand, nine hundred eighty-one".