405186900379 has 2 divisors, whose sum is σ = 405186900380. Its totient is φ = 405186900378.

The previous prime is 405186900361. The next prime is 405186900449. The reversal of 405186900379 is 973009681504.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 405186900379 - 2¹⁵ = 405186867611 is a prime.

It is not a weakly prime, because it can be changed into another prime (405186900329) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202593450189 + 202593450190.

It is an arithmetic number, because the mean of its divisors is an integer number (202593450190).

Almost surely, 2^405186900379 is an apocalyptic number.

405186900379 is a deficient number, since it is larger than the sum of its proper divisors (1).

405186900379 is an equidigital number, since it uses as much as digits as its factorization.

405186900379 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1632960, while the sum is 52.

The spelling of 405186900379 in words is "four hundred five billion, one hundred eighty-six million, nine hundred thousand, three hundred seventy-nine".