145436891 has 2 divisors, whose sum is σ = 145436892. Its totient is φ = 145436890.

The previous prime is 145436839. The next prime is 145436923. The reversal of 145436891 is 198634541.

145436891 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 145436891 - 2²² = 141242587 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (145436801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72718445 + 72718446.

It is an arithmetic number, because the mean of its divisors is an integer number (72718446).

Almost surely, 2^145436891 is an apocalyptic number.

145436891 is a deficient number, since it is larger than the sum of its proper divisors (1).

145436891 is an equidigital number, since it uses as much as digits as its factorization.

145436891 is an evil number, because the sum of its binary digits is even.

The product of its digits is 103680, while the sum is 41.

The square root of 145436891 is about 12059.7218458802. The cubic root of 145436891 is about 525.8859007866.

The spelling of 145436891 in words is "one hundred forty-five million, four hundred thirty-six thousand, eight hundred ninety-one".