74161603 has 2 divisors, whose sum is σ = 74161604. Its totient is φ = 74161602.

The previous prime is 74161567. The next prime is 74161609. The reversal of 74161603 is 30616147.

It is a strong prime.

It is an emirp because it is prime and its reverse (30616147) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-74161603 is a prime.

It is not a weakly prime, because it can be changed into another prime (74161609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37080801 + 37080802.

It is an arithmetic number, because the mean of its divisors is an integer number (37080802).

Almost surely, 2^74161603 is an apocalyptic number.

74161603 is a deficient number, since it is larger than the sum of its proper divisors (1).

74161603 is an equidigital number, since it uses as much as digits as its factorization.

74161603 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3024, while the sum is 28.

The square root of 74161603 is about 8611.7131280599. The cubic root of 74161603 is about 420.1390374900.

The spelling of 74161603 in words is "seventy-four million, one hundred sixty-one thousand, six hundred three".