73188769 has 2 divisors, whose sum is σ = 73188770. Its totient is φ = 73188768.

The previous prime is 73188767. The next prime is 73188803. The reversal of 73188769 is 96788137.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 67486225 + 5702544 = 8215^2 + 2388^2 .

It is a cyclic number.

It is not a de Polignac number, because 73188769 - 2¹ = 73188767 is a prime.

It is a super-2 number, since 2×73188769² = 10713191815470722, which contains 22 as substring.

Together with 73188767, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (73188761) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36594384 + 36594385.

It is an arithmetic number, because the mean of its divisors is an integer number (36594385).

Almost surely, 2^73188769 is an apocalyptic number.

It is an amenable number.

73188769 is a deficient number, since it is larger than the sum of its proper divisors (1).

73188769 is an equidigital number, since it uses as much as digits as its factorization.

73188769 is an evil number, because the sum of its binary digits is even.

The product of its digits is 508032, while the sum is 49.

The square root of 73188769 is about 8555.0434832326. The cubic root of 73188769 is about 418.2938514331.

The spelling of 73188769 in words is "seventy-three million, one hundred eighty-eight thousand, seven hundred sixty-nine".