145043919 has 16 divisors (see below), whose sum is σ = 217826400. Its totient is φ = 95370048.

The previous prime is 145043917. The next prime is 145043933. The reversal of 145043919 is 919340541.

It is a happy number.

145043919 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 145043919 - 2¹ = 145043917 is a prime.

It is a super-2 number, since 2×145043919² = 42075476877757122, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145043917) 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, 34824 + ... + 38765.

It is an arithmetic number, because the mean of its divisors is an integer number (13614150).

Almost surely, 2^145043919 is an apocalyptic number.

145043919 is a deficient number, since it is larger than the sum of its proper divisors (72782481).

145043919 is an equidigital number, since it uses as much as digits as its factorization.

145043919 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73671 (or 73665 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 36.

The square root of 145043919 is about 12043.4180779378. The cubic root of 145043919 is about 525.4118238089.

It can be divided in two parts, 1450 and 43919, that added together give a square (45369 = 213²).

The spelling of 145043919 in words is "one hundred forty-five million, forty-three thousand, nine hundred nineteen".