499974500381 has 2 divisors, whose sum is σ = 499974500382. Its totient is φ = 499974500380.

The previous prime is 499974500357. The next prime is 499974500419. The reversal of 499974500381 is 183005479994.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 311262452281 + 188712048100 = 557909^2 + 434410^2 .

It is a cyclic number.

It is not a de Polignac number, because 499974500381 - 2¹⁴ = 499974483997 is a prime.

It is a super-2 number, since 2×499974500381² (a number of 24 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 499974500381.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (499974500351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 249987250190 + 249987250191.

It is an arithmetic number, because the mean of its divisors is an integer number (249987250191).

Almost surely, 2^499974500381 is an apocalyptic number.

It is an amenable number.

499974500381 is a deficient number, since it is larger than the sum of its proper divisors (1).

499974500381 is an equidigital number, since it uses as much as digits as its factorization.

499974500381 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9797760, while the sum is 59.

The spelling of 499974500381 in words is "four hundred ninety-nine billion, nine hundred seventy-four million, five hundred thousand, three hundred eighty-one".