145978867 has 2 divisors, whose sum is σ = 145978868. Its totient is φ = 145978866.

The previous prime is 145978849. The next prime is 145978961. The reversal of 145978867 is 768879541.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 145978867 - 2¹⁹ = 145454579 is a prime.

It is a super-2 number, since 2×145978867² = 42619659221207378, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (145978367) 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, 72989433 + 72989434.

It is an arithmetic number, because the mean of its divisors is an integer number (72989434).

Almost surely, 2^145978867 is an apocalyptic number.

145978867 is a deficient number, since it is larger than the sum of its proper divisors (1).

145978867 is an equidigital number, since it uses as much as digits as its factorization.

145978867 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3386880, while the sum is 55.

The square root of 145978867 is about 12082.1714521852. The cubic root of 145978867 is about 526.5383354917.

The spelling of 145978867 in words is "one hundred forty-five million, nine hundred seventy-eight thousand, eight hundred sixty-seven".