145619911 has 2 divisors, whose sum is σ = 145619912. Its totient is φ = 145619910.

The previous prime is 145619897. The next prime is 145619917. The reversal of 145619911 is 119916541.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 145619911 - 2⁵ = 145619879 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (145619917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72809955 + 72809956.

It is an arithmetic number, because the mean of its divisors is an integer number (72809956).

Almost surely, 2^145619911 is an apocalyptic number.

145619911 is a deficient number, since it is larger than the sum of its proper divisors (1).

145619911 is an equidigital number, since it uses as much as digits as its factorization.

145619911 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9720, while the sum is 37.

The square root of 145619911 is about 12067.3075290224. The cubic root of 145619911 is about 526.1064025954.

The spelling of 145619911 in words is "one hundred forty-five million, six hundred nineteen thousand, nine hundred eleven".