1121448390 has 32 divisors (see below), whose sum is σ = 2695230720. Its totient is φ = 298635744.

The previous prime is 1121448323. The next prime is 1121448397. The reversal of 1121448390 is 938441211.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1121448397) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3900 + ... + 47519.

It is an arithmetic number, because the mean of its divisors is an integer number (84225960).

Almost surely, 2^1121448390 is an apocalyptic number.

1121448390 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1121448390 is an abundant number, since it is smaller than the sum of its proper divisors (1573782330).

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

1121448390 is a wasteful number, since it uses less digits than its factorization.

1121448390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52156.

The product of its (nonzero) digits is 6912, while the sum is 33.

The square root of 1121448390 is about 33488.0335343836. The cubic root of 1121448390 is about 1038.9462916142.

The spelling of 1121448390 in words is "one billion, one hundred twenty-one million, four hundred forty-eight thousand, three hundred ninety".