40162819 has 2 divisors, whose sum is σ = 40162820. Its totient is φ = 40162818.

The previous prime is 40162741. The next prime is 40162849. The reversal of 40162819 is 91826104.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 40162819 - 2⁹ = 40162307 is a prime.

It is a super-2 number, since 2×40162819² = 3226104060053522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (40162849) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20081409 + 20081410.

It is an arithmetic number, because the mean of its divisors is an integer number (20081410).

Almost surely, 2^40162819 is an apocalyptic number.

40162819 is a deficient number, since it is larger than the sum of its proper divisors (1).

40162819 is an equidigital number, since it uses as much as digits as its factorization.

40162819 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3456, while the sum is 31.

The square root of 40162819 is about 6337.4142203268. The cubic root of 40162819 is about 342.4585887737.

The spelling of 40162819 in words is "forty million, one hundred sixty-two thousand, eight hundred nineteen".