145902187 has 2 divisors, whose sum is σ = 145902188. Its totient is φ = 145902186.

The previous prime is 145902173. The next prime is 145902191. The reversal of 145902187 is 781209541.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 145902187 - 2¹⁵ = 145869419 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (145902157) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72951093 + 72951094.

It is an arithmetic number, because the mean of its divisors is an integer number (72951094).

Almost surely, 2^145902187 is an apocalyptic number.

145902187 is a deficient number, since it is larger than the sum of its proper divisors (1).

145902187 is an equidigital number, since it uses as much as digits as its factorization.

145902187 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20160, while the sum is 37.

The square root of 145902187 is about 12078.9977647154. The cubic root of 145902187 is about 526.4461257268.

The spelling of 145902187 in words is "one hundred forty-five million, nine hundred two thousand, one hundred eighty-seven".