145671187 has 2 divisors, whose sum is σ = 145671188. Its totient is φ = 145671186.

The previous prime is 145671161. The next prime is 145671209. The reversal of 145671187 is 781176541.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 145671187 - 2¹⁹ = 145146899 is a prime.

It is not a weakly prime, because it can be changed into another prime (145671107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72835593 + 72835594.

It is an arithmetic number, because the mean of its divisors is an integer number (72835594).

Almost surely, 2^145671187 is an apocalyptic number.

145671187 is a deficient number, since it is larger than the sum of its proper divisors (1).

145671187 is an equidigital number, since it uses as much as digits as its factorization.

145671187 is an evil number, because the sum of its binary digits is even.

The product of its digits is 47040, while the sum is 40.

The square root of 145671187 is about 12069.4319253227. The cubic root of 145671187 is about 526.1681465927.

The spelling of 145671187 in words is "one hundred forty-five million, six hundred seventy-one thousand, one hundred eighty-seven".