145927891 has 2 divisors, whose sum is σ = 145927892. Its totient is φ = 145927890.

The previous prime is 145927883. The next prime is 145927907. The reversal of 145927891 is 198729541.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 145927891 - 2³ = 145927883 is a prime.

It is not a weakly prime, because it can be changed into another prime (145927841) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72963945 + 72963946.

It is an arithmetic number, because the mean of its divisors is an integer number (72963946).

Almost surely, 2^145927891 is an apocalyptic number.

145927891 is a deficient number, since it is larger than the sum of its proper divisors (1).

145927891 is an equidigital number, since it uses as much as digits as its factorization.

145927891 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 181440, while the sum is 46.

The square root of 145927891 is about 12080.0617134185. The cubic root of 145927891 is about 526.4770390780.

The spelling of 145927891 in words is "one hundred forty-five million, nine hundred twenty-seven thousand, eight hundred ninety-one".