18446629 has 2 divisors, whose sum is σ = 18446630. Its totient is φ = 18446628.

The previous prime is 18446611. The next prime is 18446651. The reversal of 18446629 is 92664481.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15880225 + 2566404 = 3985^2 + 1602^2 .

It is a cyclic number.

It is not a de Polignac number, because 18446629 - 2¹³ = 18438437 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 18446591 and 18446600.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18441629) by changing a digit.

It is an upside-down number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9223314 + 9223315.

It is an arithmetic number, because the mean of its divisors is an integer number (9223315).

Almost surely, 2^18446629 is an apocalyptic number.

It is an amenable number.

18446629 is a deficient number, since it is larger than the sum of its proper divisors (1).

18446629 is an equidigital number, since it uses as much as digits as its factorization.

18446629 is an evil number, because the sum of its binary digits is even.

The product of its digits is 82944, while the sum is 40.

The square root of 18446629 is about 4294.9538996362. The cubic root of 18446629 is about 264.2240455368.

The spelling of 18446629 in words is "eighteen million, four hundred forty-six thousand, six hundred twenty-nine".