145274893 has 4 divisors (see below), whose sum is σ = 152920960. Its totient is φ = 137628828.

The previous prime is 145274887. The next prime is 145274953. The reversal of 145274893 is 398472541.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 145274893 - 2⁵ = 145274861 is a prime.

It is a super-2 number, since 2×145274893² = 42209589072322898, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145274813) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3823005 + ... + 3823042.

It is an arithmetic number, because the mean of its divisors is an integer number (38230240).

Almost surely, 2^145274893 is an apocalyptic number.

It is an amenable number.

145274893 is a deficient number, since it is larger than the sum of its proper divisors (7646067).

145274893 is an equidigital number, since it uses as much as digits as its factorization.

145274893 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7646066.

The product of its digits is 241920, while the sum is 43.

The square root of 145274893 is about 12053.0034846091. The cubic root of 145274893 is about 525.6905718154.

The spelling of 145274893 in words is "one hundred forty-five million, two hundred seventy-four thousand, eight hundred ninety-three".