638274000307 has 2 divisors, whose sum is σ = 638274000308. Its totient is φ = 638274000306.

The previous prime is 638274000277. The next prime is 638274000347. The reversal of 638274000307 is 703000472836.

It is a happy number.

It is an a-pointer prime, because the next prime (638274000347) can be obtained adding 638274000307 to its sum of digits (40).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 638274000307 - 2²³ = 638265611699 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 638274000307.

It is not a weakly prime, because it can be changed into another prime (638274000347) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 319137000153 + 319137000154.

It is an arithmetic number, because the mean of its divisors is an integer number (319137000154).

Almost surely, 2^638274000307 is an apocalyptic number.

638274000307 is a deficient number, since it is larger than the sum of its proper divisors (1).

638274000307 is an equidigital number, since it uses as much as digits as its factorization.

638274000307 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 169344, while the sum is 40.

The spelling of 638274000307 in words is "six hundred thirty-eight billion, two hundred seventy-four million, three hundred seven", and thus it is an aban number.