145191369 has 16 divisors (see below), whose sum is σ = 204353600. Its totient is φ = 91440576.

The previous prime is 145191337. The next prime is 145191377. The reversal of 145191369 is 963191541.

145191369 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 145191369 - 2⁵ = 145191337 is a prime.

It is a super-2 number, since 2×145191369² = 42161067264188322, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (145191769) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17847 + ... + 24675.

It is an arithmetic number, because the mean of its divisors is an integer number (12772100).

Almost surely, 2^145191369 is an apocalyptic number.

145191369 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

145191369 is a deficient number, since it is larger than the sum of its proper divisors (59162231).

145191369 is a wasteful number, since it uses less digits than its factorization.

145191369 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7224.

The product of its digits is 29160, while the sum is 39.

The square root of 145191369 is about 12049.5381239282. The cubic root of 145191369 is about 525.5898060743.

The spelling of 145191369 in words is "one hundred forty-five million, one hundred ninety-one thousand, three hundred sixty-nine".