1838311379 has 2 divisors, whose sum is σ = 1838311380. Its totient is φ = 1838311378.

The previous prime is 1838311373. The next prime is 1838311417. The reversal of 1838311379 is 9731138381.

It is a weak prime.

It is an emirp because it is prime and its reverse (9731138381) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1838311379 - 2²⁰ = 1837262803 is a prime.

It is not a weakly prime, because it can be changed into another prime (1838311373) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 919155689 + 919155690.

It is an arithmetic number, because the mean of its divisors is an integer number (919155690).

Almost surely, 2^1838311379 is an apocalyptic number.

1838311379 is a deficient number, since it is larger than the sum of its proper divisors (1).

1838311379 is an equidigital number, since it uses as much as digits as its factorization.

1838311379 is an evil number, because the sum of its binary digits is even.

The product of its digits is 108864, while the sum is 44.

The square root of 1838311379 is about 42875.5335710239. The cubic root of 1838311379 is about 1225.0101632365.

The spelling of 1838311379 in words is "one billion, eight hundred thirty-eight million, three hundred eleven thousand, three hundred seventy-nine".