145893619 has 2 divisors, whose sum is σ = 145893620. Its totient is φ = 145893618.

The previous prime is 145893617. The next prime is 145893653. The reversal of 145893619 is 916398541.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 145893619 - 2¹ = 145893617 is a prime.

It is a super-2 number, since 2×145893619² = 42569896129834322, which contains 22 as substring.

Together with 145893617, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (145893611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72946809 + 72946810.

It is an arithmetic number, because the mean of its divisors is an integer number (72946810).

Almost surely, 2^145893619 is an apocalyptic number.

145893619 is a deficient number, since it is larger than the sum of its proper divisors (1).

145893619 is an equidigital number, since it uses as much as digits as its factorization.

145893619 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 233280, while the sum is 46.

The square root of 145893619 is about 12078.6430943215. The cubic root of 145893619 is about 526.4358204696.

The spelling of 145893619 in words is "one hundred forty-five million, eight hundred ninety-three thousand, six hundred nineteen".