1119838381 has 2 divisors, whose sum is σ = 1119838382. Its totient is φ = 1119838380.

The previous prime is 1119838339. The next prime is 1119838417. The reversal of 1119838381 is 1838389111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 808492356 + 311346025 = 28434^2 + 17645^2 .

It is a cyclic number.

It is not a de Polignac number, because 1119838381 - 2²⁵ = 1086283949 is a prime.

It is a super-2 number, since 2×1119838381² = 2508075999121402322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1119838301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 559919190 + 559919191.

It is an arithmetic number, because the mean of its divisors is an integer number (559919191).

Almost surely, 2^1119838381 is an apocalyptic number.

It is an amenable number.

1119838381 is a deficient number, since it is larger than the sum of its proper divisors (1).

1119838381 is an equidigital number, since it uses as much as digits as its factorization.

1119838381 is an evil number, because the sum of its binary digits is even.

The product of its digits is 41472, while the sum is 43.

The square root of 1119838381 is about 33463.9863285891. The cubic root of 1119838381 is about 1038.4488652468.

The spelling of 1119838381 in words is "one billion, one hundred nineteen million, eight hundred thirty-eight thousand, three hundred eighty-one".