145888819 has 2 divisors, whose sum is σ = 145888820. Its totient is φ = 145888818.

The previous prime is 145888733. The next prime is 145888843. The reversal of 145888819 is 918888541.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 145888819 - 2⁹ = 145888307 is a prime.

It is a super-2 number, since 2×145888819² = 42567095018429522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (145888219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72944409 + 72944410.

It is an arithmetic number, because the mean of its divisors is an integer number (72944410).

Almost surely, 2^145888819 is an apocalyptic number.

145888819 is a deficient number, since it is larger than the sum of its proper divisors (1).

145888819 is an equidigital number, since it uses as much as digits as its factorization.

145888819 is an evil number, because the sum of its binary digits is even.

The product of its digits is 737280, while the sum is 52.

The square root of 145888819 is about 12078.4443948714. Note that the first 3 decimals coincide. The cubic root of 145888819 is about 526.4300470399.

The spelling of 145888819 in words is "one hundred forty-five million, eight hundred eighty-eight thousand, eight hundred nineteen".