73185493 has 12 divisors (see below), whose sum is σ = 78831460. Its totient is φ = 67917312.

The previous prime is 73185487. The next prime is 73185503. The reversal of 73185493 is 39458137.

It can be written as a sum of positive squares in 6 ways, for example, as 31684 + 73153809 = 178^2 + 8553^2 .

It is not a de Polignac number, because 73185493 - 2⁹ = 73184981 is a prime.

It is a super-2 number, since 2×73185493² = 10712232771306098, which contains 22 as substring.

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73185443) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19363 + ... + 22831.

Almost surely, 2^73185493 is an apocalyptic number.

73185493 is a gapful number since it is divisible by the number (73) formed by its first and last digit.

It is an amenable number.

73185493 is a deficient number, since it is larger than the sum of its proper divisors (5645967).

73185493 is a wasteful number, since it uses less digits than its factorization.

73185493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3576 (or 3559 counting only the distinct ones).

The product of its digits is 90720, while the sum is 40.

The square root of 73185493 is about 8554.8520150848. The cubic root of 73185493 is about 418.2876102610.

The spelling of 73185493 in words is "seventy-three million, one hundred eighty-five thousand, four hundred ninety-three".