1228553994 has 64 divisors (see below), whose sum is σ = 2758413312. Its totient is φ = 362880000.

The previous prime is 1228553987. The next prime is 1228554007. The reversal of 1228553994 is 4993558221.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 111744 + ... + 122244.

It is an arithmetic number, because the mean of its divisors is an integer number (43100208).

Almost surely, 2^1228553994 is an apocalyptic number.

1228553994 is an abundant number, since it is smaller than the sum of its proper divisors (1529859318).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1228553994 is a wasteful number, since it uses less digits than its factorization.

1228553994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10591.

The product of its digits is 777600, while the sum is 48.

The square root of 1228553994 is about 35050.7345714751. The cubic root of 1228553994 is about 1071.0212377037.

The spelling of 1228553994 in words is "one billion, two hundred twenty-eight million, five hundred fifty-three thousand, nine hundred ninety-four".