73821493 has 2 divisors, whose sum is σ = 73821494. Its totient is φ = 73821492.

The previous prime is 73821487. The next prime is 73821499. The reversal of 73821493 is 39412837.

It is a balanced prime because it is at equal distance from previous prime (73821487) and next prime (73821499).

It can be written as a sum of positive squares in only one way, i.e., 58400164 + 15421329 = 7642^2 + 3927^2 .

It is a cyclic number.

It is not a de Polignac number, because 73821493 - 2¹³ = 73813301 is a prime.

It is a super-2 number, since 2×73821493² = 10899225657498098, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (73821499) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36910746 + 36910747.

It is an arithmetic number, because the mean of its divisors is an integer number (36910747).

Almost surely, 2^73821493 is an apocalyptic number.

It is an amenable number.

73821493 is a deficient number, since it is larger than the sum of its proper divisors (1).

73821493 is an equidigital number, since it uses as much as digits as its factorization.

73821493 is an evil number, because the sum of its binary digits is even.

The product of its digits is 36288, while the sum is 37.

The square root of 73821493 is about 8591.9434937620. The cubic root of 73821493 is about 419.4957913889.

The spelling of 73821493 in words is "seventy-three million, eight hundred twenty-one thousand, four hundred ninety-three".