145219967 has 4 divisors (see below), whose sum is σ = 153762336. Its totient is φ = 136677600.

The previous prime is 145219927. The next prime is 145219979. The reversal of 145219967 is 769912541.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 145219967 - 2¹⁰ = 145218943 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145219927) 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 in 3 ways as a sum of consecutive naturals, for example, 4271159 + ... + 4271192.

It is an arithmetic number, because the mean of its divisors is an integer number (38440584).

Almost surely, 2^145219967 is an apocalyptic number.

145219967 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

145219967 is a deficient number, since it is larger than the sum of its proper divisors (8542369).

145219967 is an equidigital number, since it uses as much as digits as its factorization.

145219967 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8542368.

The product of its digits is 136080, while the sum is 44.

The square root of 145219967 is about 12050.7247499891. The cubic root of 145219967 is about 525.6243118685.

The spelling of 145219967 in words is "one hundred forty-five million, two hundred nineteen thousand, nine hundred sixty-seven".