29031651949 has 2 divisors, whose sum is σ = 29031651950. Its totient is φ = 29031651948.

The previous prime is 29031651947. The next prime is 29031651953. The reversal of 29031651949 is 94915613092.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 27903363849 + 1128288100 = 167043^2 + 33590^2 .

It is a cyclic number.

It is not a de Polignac number, because 29031651949 - 2¹ = 29031651947 is a prime.

Together with 29031651947, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (29031651947) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14515825974 + 14515825975.

It is an arithmetic number, because the mean of its divisors is an integer number (14515825975).

Almost surely, 2^29031651949 is an apocalyptic number.

It is an amenable number.

29031651949 is a deficient number, since it is larger than the sum of its proper divisors (1).

29031651949 is an equidigital number, since it uses as much as digits as its factorization.

29031651949 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 524880, while the sum is 49.

The spelling of 29031651949 in words is "twenty-nine billion, thirty-one million, six hundred fifty-one thousand, nine hundred forty-nine".