1373065173 has 6 divisors (see below), whose sum is σ = 1983316374. Its totient is φ = 915376776.

The previous prime is 1373065139. The next prime is 1373065273. The reversal of 1373065173 is 3715603731.

It is a happy number.

1373065173 is a `hidden beast` number, since 137 + 3 + 0 + 6 + 517 + 3 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1273205124 + 99860049 = 35682^2 + 9993^2 .

It is not a de Polignac number, because 1373065173 - 2¹² = 1373061077 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1373065073) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 76281390 + ... + 76281407.

It is an arithmetic number, because the mean of its divisors is an integer number (330552729).

Almost surely, 2^1373065173 is an apocalyptic number.

It is an amenable number.

1373065173 is a deficient number, since it is larger than the sum of its proper divisors (610251201).

1373065173 is a wasteful number, since it uses less digits than its factorization.

1373065173 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152562803 (or 152562800 counting only the distinct ones).

The product of its (nonzero) digits is 39690, while the sum is 36.

The square root of 1373065173 is about 37054.8940492346. The cubic root of 1373065173 is about 1111.4682226627.

The spelling of 1373065173 in words is "one billion, three hundred seventy-three million, sixty-five thousand, one hundred seventy-three".