146382391 has 2 divisors, whose sum is σ = 146382392. Its totient is φ = 146382390.

The previous prime is 146382377. The next prime is 146382421. The reversal of 146382391 is 193283641.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 146382391 - 2⁷ = 146382263 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 146382391.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (146382331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 73191195 + 73191196.

It is an arithmetic number, because the mean of its divisors is an integer number (73191196).

Almost surely, 2^146382391 is an apocalyptic number.

146382391 is a deficient number, since it is larger than the sum of its proper divisors (1).

146382391 is an equidigital number, since it uses as much as digits as its factorization.

146382391 is an evil number, because the sum of its binary digits is even.

The product of its digits is 31104, while the sum is 37.

The square root of 146382391 is about 12098.8590784421. The cubic root of 146382391 is about 527.0230526398.

The spelling of 146382391 in words is "one hundred forty-six million, three hundred eighty-two thousand, three hundred ninety-one".