146181899 has 2 divisors, whose sum is σ = 146181900. Its totient is φ = 146181898.

The previous prime is 146181887. The next prime is 146181901. The reversal of 146181899 is 998181641.

146181899 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 146181899 - 2⁴ = 146181883 is a prime.

Together with 146181901, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (146181809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 73090949 + 73090950.

It is an arithmetic number, because the mean of its divisors is an integer number (73090950).

Almost surely, 2^146181899 is an apocalyptic number.

146181899 is a deficient number, since it is larger than the sum of its proper divisors (1).

146181899 is an equidigital number, since it uses as much as digits as its factorization.

146181899 is an evil number, because the sum of its binary digits is even.

The product of its digits is 124416, while the sum is 47.

The square root of 146181899 is about 12090.5706647784. The cubic root of 146181899 is about 526.7823311009.

The spelling of 146181899 in words is "one hundred forty-six million, one hundred eighty-one thousand, eight hundred ninety-nine".