145115419 has 4 divisors (see below), whose sum is σ = 145149840. Its totient is φ = 145081000.

The previous prime is 145115413. The next prime is 145115423. The reversal of 145115419 is 914511541.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 914511541 = 1723 ⋅530767.

It is a cyclic number.

It is not a de Polignac number, because 145115419 - 2¹⁹ = 144591131 is a prime.

It is a super-2 number, since 2×145115419² = 42116969663091122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (145115413) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9832 + ... + 19669.

It is an arithmetic number, because the mean of its divisors is an integer number (36287460).

Almost surely, 2^145115419 is an apocalyptic number.

145115419 is a deficient number, since it is larger than the sum of its proper divisors (34421).

145115419 is an equidigital number, since it uses as much as digits as its factorization.

145115419 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34420.

The product of its digits is 3600, while the sum is 31.

The square root of 145115419 is about 12046.3861385894. The cubic root of 145115419 is about 525.4981442706.

The spelling of 145115419 in words is "one hundred forty-five million, one hundred fifteen thousand, four hundred nineteen".