1013400173 has 2 divisors, whose sum is σ = 1013400174. Its totient is φ = 1013400172.

The previous prime is 1013400163. The next prime is 1013400233. The reversal of 1013400173 is 3710043101.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 741908644 + 271491529 = 27238^2 + 16477^2 .

It is an emirp because it is prime and its reverse (3710043101) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1013400173 - 2⁸ = 1013399917 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1013400163) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 506700086 + 506700087.

It is an arithmetic number, because the mean of its divisors is an integer number (506700087).

Almost surely, 2^1013400173 is an apocalyptic number.

It is an amenable number.

1013400173 is a deficient number, since it is larger than the sum of its proper divisors (1).

1013400173 is an equidigital number, since it uses as much as digits as its factorization.

1013400173 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 252, while the sum is 20.

The square root of 1013400173 is about 31833.9468649428. The cubic root of 1013400173 is about 1004.4469199238.

Adding to 1013400173 its reverse (3710043101), we get a palindrome (4723443274).

The spelling of 1013400173 in words is "one billion, thirteen million, four hundred thousand, one hundred seventy-three".