1228803946 has 4 divisors (see below), whose sum is σ = 1843205922. Its totient is φ = 614401972.

The previous prime is 1228803941. The next prime is 1228803977. The reversal of 1228803946 is 6493088221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 6493088221 = 31259 ⋅207719.

It can be written as a sum of positive squares in only one way, i.e., 966525921 + 262278025 = 31089^2 + 16195^2 .

It is not an unprimeable number, because it can be changed into a prime (1228803941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 307200985 + ... + 307200988.

Almost surely, 2^1228803946 is an apocalyptic number.

1228803946 is a deficient number, since it is larger than the sum of its proper divisors (614401976).

1228803946 is an equidigital number, since it uses as much as digits as its factorization.

1228803946 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 614401975.

The product of its (nonzero) digits is 165888, while the sum is 43.

The square root of 1228803946 is about 35054.2999644837. The cubic root of 1228803946 is about 1071.0938666504.

The spelling of 1228803946 in words is "one billion, two hundred twenty-eight million, eight hundred three thousand, nine hundred forty-six".