1121640354 has 24 divisors (see below), whose sum is σ = 2432731392. Its totient is φ = 373493880.

The previous prime is 1121640353. The next prime is 1121640407. The reversal of 1121640354 is 4530461211.

It is a happy number.

1121640354 is a `hidden beast` number, since 1 + 12 + 1 + 640 + 3 + 5 + 4 = 666.

It is a super-3 number, since 3×1121640354³ (a number of 28 digits) contains 333 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1121640353) 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 11 ways as a sum of consecutive naturals, for example, 14002 + ... + 49389.

It is an arithmetic number, because the mean of its divisors is an integer number (101363808).

Almost surely, 2^1121640354 is an apocalyptic number.

1121640354 is an abundant number, since it is smaller than the sum of its proper divisors (1311091038).

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

1121640354 is a wasteful number, since it uses less digits than its factorization.

1121640354 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64382 (or 64379 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 1121640354 is about 33490.8995698832. The cubic root of 1121640354 is about 1039.0055687981.

The spelling of 1121640354 in words is "one billion, one hundred twenty-one million, six hundred forty thousand, three hundred fifty-four".