74161147 has 2 divisors, whose sum is σ = 74161148. Its totient is φ = 74161146.

The previous prime is 74161097. The next prime is 74161181. The reversal of 74161147 is 74116147.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-74161147 is a prime.

It is not a weakly prime, because it can be changed into another prime (74161847) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37080573 + 37080574.

It is an arithmetic number, because the mean of its divisors is an integer number (37080574).

Almost surely, 2^74161147 is an apocalyptic number.

74161147 is a deficient number, since it is larger than the sum of its proper divisors (1).

74161147 is an equidigital number, since it uses as much as digits as its factorization.

74161147 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4704, while the sum is 31.

The square root of 74161147 is about 8611.6866524508. The cubic root of 74161147 is about 420.1381763805.

The spelling of 74161147 in words is "seventy-four million, one hundred sixty-one thousand, one hundred forty-seven".