40194686383 has 2 divisors, whose sum is σ = 40194686384. Its totient is φ = 40194686382.

The previous prime is 40194686359. The next prime is 40194686533. The reversal of 40194686383 is 38368649104.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40194686383 is a prime.

It is a super-2 number, since 2×40194686383² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 40194686383.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40194686783) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20097343191 + 20097343192.

It is an arithmetic number, because the mean of its divisors is an integer number (20097343192).

Almost surely, 2^40194686383 is an apocalyptic number.

40194686383 is a deficient number, since it is larger than the sum of its proper divisors (1).

40194686383 is an equidigital number, since it uses as much as digits as its factorization.

40194686383 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2985984, while the sum is 52.

The spelling of 40194686383 in words is "forty billion, one hundred ninety-four million, six hundred eighty-six thousand, three hundred eighty-three".