146181887 has 2 divisors, whose sum is σ = 146181888. Its totient is φ = 146181886.

The previous prime is 146181883. The next prime is 146181899. The reversal of 146181887 is 788181641.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 146181887 - 2² = 146181883 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (146181883) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 73090943 + 73090944.

It is an arithmetic number, because the mean of its divisors is an integer number (73090944).

Almost surely, 2^146181887 is an apocalyptic number.

146181887 is a deficient number, since it is larger than the sum of its proper divisors (1).

146181887 is an equidigital number, since it uses as much as digits as its factorization.

146181887 is an evil number, because the sum of its binary digits is even.

The product of its digits is 86016, while the sum is 44.

The square root of 146181887 is about 12090.5701685239. The cubic root of 146181887 is about 526.7823166864.

The spelling of 146181887 in words is "one hundred forty-six million, one hundred eighty-one thousand, eight hundred eighty-seven".