20381119 has 12 divisors (see below), whose sum is σ = 22551480. Its totient is φ = 18405200.

The previous prime is 20381107. The next prime is 20381149. The reversal of 20381119 is 91118302.

It is not a de Polignac number, because 20381119 - 2¹⁵ = 20348351 is a prime.

It is a super-2 number, since 2×20381119² = 830780023384322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20381093 and 20381102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20381149) 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 in 11 ways as a sum of consecutive naturals, for example, 21189 + ... + 22129.

It is an arithmetic number, because the mean of its divisors is an integer number (1879290).

Almost surely, 2^20381119 is an apocalyptic number.

20381119 is a deficient number, since it is larger than the sum of its proper divisors (2170361).

20381119 is a wasteful number, since it uses less digits than its factorization.

20381119 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1142 (or 1131 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 25.

The square root of 20381119 is about 4514.5452705671. The cubic root of 20381119 is about 273.1551176496.

The spelling of 20381119 in words is "twenty million, three hundred eighty-one thousand, one hundred nineteen".