12651019 has 2 divisors, whose sum is σ = 12651020. Its totient is φ = 12651018.

The previous prime is 12650999. The next prime is 12651049. The reversal of 12651019 is 91015621.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12651019 - 2¹³ = 12642827 is a prime.

It is a super-2 number, since 2×12651019² = 320096563476722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12650984 and 12651002.

It is not a weakly prime, because it can be changed into another prime (12651049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6325509 + 6325510.

It is an arithmetic number, because the mean of its divisors is an integer number (6325510).

Almost surely, 2^12651019 is an apocalyptic number.

12651019 is a deficient number, since it is larger than the sum of its proper divisors (1).

12651019 is an equidigital number, since it uses as much as digits as its factorization.

12651019 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 540, while the sum is 25.

The square root of 12651019 is about 3556.8270972877. The cubic root of 12651019 is about 233.0103269874.

The spelling of 12651019 in words is "twelve million, six hundred fifty-one thousand, nineteen".