145861867 has 2 divisors, whose sum is σ = 145861868. Its totient is φ = 145861866.

The previous prime is 145861831. The next prime is 145861931. The reversal of 145861867 is 768168541.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 145861867 - 2⁷ = 145861739 is a prime.

It is not a weakly prime, because it can be changed into another prime (145861367) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72930933 + 72930934.

It is an arithmetic number, because the mean of its divisors is an integer number (72930934).

Almost surely, 2^145861867 is an apocalyptic number.

145861867 is a deficient number, since it is larger than the sum of its proper divisors (1).

145861867 is an equidigital number, since it uses as much as digits as its factorization.

145861867 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 322560, while the sum is 46.

The square root of 145861867 is about 12077.3286367474. The cubic root of 145861867 is about 526.3976268801.

The spelling of 145861867 in words is "one hundred forty-five million, eight hundred sixty-one thousand, eight hundred sixty-seven".