1228463091 has 10 divisors (see below), whose sum is σ = 1835111652. Its totient is φ = 818975340.

The previous prime is 1228463083. The next prime is 1228463147. The reversal of 1228463091 is 1903648221.

1228463091 is a `hidden beast` number, since 12 + 2 + 8 + 4 + 630 + 9 + 1 = 666.

It is not a de Polignac number, because 1228463091 - 2³ = 1228463083 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1228463021) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 7583025 + ... + 7583186.

Almost surely, 2^1228463091 is an apocalyptic number.

1228463091 is a deficient number, since it is larger than the sum of its proper divisors (606648561).

1228463091 is an equidigital number, since it uses as much as digits as its factorization.

1228463091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15166223 (or 15166214 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 1228463091 is about 35049.4378128951. The cubic root of 1228463091 is about 1070.9948214330.

The spelling of 1228463091 in words is "one billion, two hundred twenty-eight million, four hundred sixty-three thousand, ninety-one".