147697019 has 2 divisors, whose sum is σ = 147697020. Its totient is φ = 147697018.

The previous prime is 147697009. The next prime is 147697021. The reversal of 147697019 is 910796741.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-147697019 is a prime.

It is a super-2 number, since 2×147697019² = 43628818842972722, which contains 22 as substring.

Together with 147697021, 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 (147697009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 73848509 + 73848510.

It is an arithmetic number, because the mean of its divisors is an integer number (73848510).

Almost surely, 2^147697019 is an apocalyptic number.

147697019 is a deficient number, since it is larger than the sum of its proper divisors (1).

147697019 is an equidigital number, since it uses as much as digits as its factorization.

147697019 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 95256, while the sum is 44.

The square root of 147697019 is about 12153.0662386083. The cubic root of 147697019 is about 528.5960457316.

The spelling of 147697019 in words is "one hundred forty-seven million, six hundred ninety-seven thousand, nineteen".