1228193910 has 96 divisors (see below), whose sum is σ = 3341969280. Its totient is φ = 312609024.

The previous prime is 1228193899. The next prime is 1228193969. The reversal of 1228193910 is 193918221.

It is a super-2 number, since 2×1228193910² = 3016920561122176200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 173011 + ... + 179969.

It is an arithmetic number, because the mean of its divisors is an integer number (34812180).

Almost surely, 2^1228193910 is an apocalyptic number.

1228193910 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1228193910, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1670984640).

1228193910 is an abundant number, since it is smaller than the sum of its proper divisors (2113775370).

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

1228193910 is a wasteful number, since it uses less digits than its factorization.

1228193910 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7062 (or 7059 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 36.

The square root of 1228193910 is about 35045.5975837194. The cubic root of 1228193910 is about 1070.9165902082.

The spelling of 1228193910 in words is "one billion, two hundred twenty-eight million, one hundred ninety-three thousand, nine hundred ten".