73942381 has 2 divisors, whose sum is σ = 73942382. Its totient is φ = 73942380.

The previous prime is 73942369. The next prime is 73942387. The reversal of 73942381 is 18324937.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 53421481 + 20520900 = 7309^2 + 4530^2 .

It is a cyclic number.

It is not a de Polignac number, because 73942381 - 2⁹ = 73941869 is a prime.

It is a super-2 number, since 2×73942381² = 10934951415898322, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 73942381.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (73942387) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36971190 + 36971191.

It is an arithmetic number, because the mean of its divisors is an integer number (36971191).

Almost surely, 2^73942381 is an apocalyptic number.

It is an amenable number.

73942381 is a deficient number, since it is larger than the sum of its proper divisors (1).

73942381 is an equidigital number, since it uses as much as digits as its factorization.

73942381 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 73942381 is about 8598.9755785210. The cubic root of 73942381 is about 419.7246513447.

The spelling of 73942381 in words is "seventy-three million, nine hundred forty-two thousand, three hundred eighty-one".