1253902173 has 8 divisors (see below), whose sum is σ = 1688423136. Its totient is φ = 827658000.

The previous prime is 1253902159. The next prime is 1253902189. The reversal of 1253902173 is 3712093521.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1253902173 - 2⁴ = 1253902157 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1253902193) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2068843 + ... + 2069448.

It is an arithmetic number, because the mean of its divisors is an integer number (211052892).

Almost surely, 2^1253902173 is an apocalyptic number.

It is an amenable number.

1253902173 is a deficient number, since it is larger than the sum of its proper divisors (434520963).

1253902173 is a wasteful number, since it uses less digits than its factorization.

1253902173 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4138395.

The product of its (nonzero) digits is 11340, while the sum is 33.

The square root of 1253902173 is about 35410.4811178837. The cubic root of 1253902173 is about 1078.3371108680.

Adding to 1253902173 its reverse (3712093521), we get a palindrome (4965995694).

The spelling of 1253902173 in words is "one billion, two hundred fifty-three million, nine hundred two thousand, one hundred seventy-three".