173937042989 has 2 divisors, whose sum is σ = 173937042990. Its totient is φ = 173937042988.

The previous prime is 173937042901. The next prime is 173937043099. The reversal of 173937042989 is 989240739371.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 156762940489 + 17174102500 = 395933^2 + 131050^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-173937042989 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (173937042089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86968521494 + 86968521495.

It is an arithmetic number, because the mean of its divisors is an integer number (86968521495).

Almost surely, 2^173937042989 is an apocalyptic number.

It is an amenable number.

173937042989 is a deficient number, since it is larger than the sum of its proper divisors (1).

173937042989 is an equidigital number, since it uses as much as digits as its factorization.

173937042989 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20575296, while the sum is 62.

The spelling of 173937042989 in words is "one hundred seventy-three billion, nine hundred thirty-seven million, forty-two thousand, nine hundred eighty-nine".