145500019 has 8 divisors (see below), whose sum is σ = 171650048. Its totient is φ = 120691080.

The previous prime is 145500011. The next prime is 145500029. The reversal of 145500019 is 910005541.

145500019 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 145500019 - 2³ = 145500011 is a prime.

It is a super-2 number, since 2×145500019² = 42340511058000722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 145499966 and 145500002.

It is not an unprimeable number, because it can be changed into a prime (145500011) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 335037 + ... + 335470.

It is an arithmetic number, because the mean of its divisors is an integer number (21456256).

Almost surely, 2^145500019 is an apocalyptic number.

145500019 is a deficient number, since it is larger than the sum of its proper divisors (26150029).

145500019 is an equidigital number, since it uses as much as digits as its factorization.

145500019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 670545.

The product of its (nonzero) digits is 900, while the sum is 25.

The square root of 145500019 is about 12062.3388693901. The cubic root of 145500019 is about 525.9619780523.

The spelling of 145500019 in words is "one hundred forty-five million, five hundred thousand, nineteen".