20612419 has 2 divisors, whose sum is σ = 20612420. Its totient is φ = 20612418.

The previous prime is 20612413. The next prime is 20612429. The reversal of 20612419 is 91421602.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20612419 - 2³ = 20612411 is a prime.

It is a super-2 number, since 2×20612419² = 849743634063122, which contains 22 as substring.

It is equal to p_1306942 and since 20612419 and 1306942 have the same sum of digits, it is a Honaker prime.

It is a junction number, because it is equal to n+sod(n) for n = 20612393 and 20612402.

It is not a weakly prime, because it can be changed into another prime (20612411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10306209 + 10306210.

It is an arithmetic number, because the mean of its divisors is an integer number (10306210).

Almost surely, 2^20612419 is an apocalyptic number.

20612419 is a deficient number, since it is larger than the sum of its proper divisors (1).

20612419 is an equidigital number, since it uses as much as digits as its factorization.

20612419 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 20612419 is about 4540.0901973419. The cubic root of 20612419 is about 274.1845551880.

The spelling of 20612419 in words is "twenty million, six hundred twelve thousand, four hundred nineteen".