145274583491 has 2 divisors, whose sum is σ = 145274583492. Its totient is φ = 145274583490.

The previous prime is 145274583473. The next prime is 145274583511. The reversal of 145274583491 is 194385472541.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-145274583491 is a prime.

It is a super-2 number, since 2×145274583491² (a number of 23 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (145274583791) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72637291745 + 72637291746.

It is an arithmetic number, because the mean of its divisors is an integer number (72637291746).

Almost surely, 2^145274583491 is an apocalyptic number.

145274583491 is a deficient number, since it is larger than the sum of its proper divisors (1).

145274583491 is an equidigital number, since it uses as much as digits as its factorization.

145274583491 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4838400, while the sum is 53.

The spelling of 145274583491 in words is "one hundred forty-five billion, two hundred seventy-four million, five hundred eighty-three thousand, four hundred ninety-one".