1838274728377 has 2 divisors, whose sum is σ = 1838274728378. Its totient is φ = 1838274728376.

The previous prime is 1838274728371. The next prime is 1838274728413. The reversal of 1838274728377 is 7738274728381.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1167990301696 + 670284426681 = 1080736^2 + 818709^2 .

It is a cyclic number.

It is not a de Polignac number, because 1838274728377 - 2³ = 1838274728369 is a prime.

It is not a weakly prime, because it can be changed into another prime (1838274728371) 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, 919137364188 + 919137364189.

It is an arithmetic number, because the mean of its divisors is an integer number (919137364189).

Almost surely, 2^{1838274728377} is an apocalyptic number.

It is an amenable number.

1838274728377 is a deficient number, since it is larger than the sum of its proper divisors (1).

1838274728377 is an equidigital number, since it uses as much as digits as its factorization.

1838274728377 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 177020928, while the sum is 67.

The spelling of 1838274728377 in words is "one trillion, eight hundred thirty-eight billion, two hundred seventy-four million, seven hundred twenty-eight thousand, three hundred seventy-seven".