20988119 has 2 divisors, whose sum is σ = 20988120. Its totient is φ = 20988118.

The previous prime is 20988109. The next prime is 20988131. The reversal of 20988119 is 91188902.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20988119 is a prime.

It is a super-2 number, since 2×20988119² = 881002278316322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20988109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10494059 + 10494060.

It is an arithmetic number, because the mean of its divisors is an integer number (10494060).

Almost surely, 2^20988119 is an apocalyptic number.

20988119 is a deficient number, since it is larger than the sum of its proper divisors (1).

20988119 is an equidigital number, since it uses as much as digits as its factorization.

20988119 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10368, while the sum is 38.

The square root of 20988119 is about 4581.2791881744. The cubic root of 20988119 is about 275.8403780163.

The spelling of 20988119 in words is "twenty million, nine hundred eighty-eight thousand, one hundred nineteen".