1228416646 has 4 divisors (see below), whose sum is σ = 1842624972. Its totient is φ = 614208322.

The previous prime is 1228416611. The next prime is 1228416649. The reversal of 1228416646 is 6466148221.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 1228416599 and 1228416608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1228416649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 307104160 + ... + 307104163.

It is an arithmetic number, because the mean of its divisors is an integer number (460656243).

Almost surely, 2^1228416646 is an apocalyptic number.

1228416646 is a deficient number, since it is larger than the sum of its proper divisors (614208326).

1228416646 is an equidigital number, since it uses as much as digits as its factorization.

1228416646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 614208325.

The product of its digits is 110592, while the sum is 40.

The square root of 1228416646 is about 35048.7752425103. The cubic root of 1228416646 is about 1070.9813240850.

The spelling of 1228416646 in words is "one billion, two hundred twenty-eight million, four hundred sixteen thousand, six hundred forty-six".