147945019 has 2 divisors, whose sum is σ = 147945020. Its totient is φ = 147945018.

The previous prime is 147945013. The next prime is 147945047. The reversal of 147945019 is 910549741.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 147945019 - 2⁵ = 147944987 is a prime.

It is a super-2 number, since 2×147945019² = 43775457293820722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (147945013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 73972509 + 73972510.

It is an arithmetic number, because the mean of its divisors is an integer number (73972510).

Almost surely, 2^147945019 is an apocalyptic number.

147945019 is a deficient number, since it is larger than the sum of its proper divisors (1).

147945019 is an equidigital number, since it uses as much as digits as its factorization.

147945019 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 45360, while the sum is 40.

The square root of 147945019 is about 12163.2651455109. The cubic root of 147945019 is about 528.8917378089.

The spelling of 147945019 in words is "one hundred forty-seven million, nine hundred forty-five thousand, nineteen".