1121778354 has 96 divisors (see below), whose sum is σ = 2546380800. Its totient is φ = 328423680.

The previous prime is 1121778347. The next prime is 1121778401. The reversal of 1121778354 is 4538771211.

It is a happy number.

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 2602519 + ... + 2602949.

It is an arithmetic number, because the mean of its divisors is an integer number (26524800).

Almost surely, 2^1121778354 is an apocalyptic number.

1121778354 is an abundant number, since it is smaller than the sum of its proper divisors (1424602446).

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

1121778354 is a wasteful number, since it uses less digits than its factorization.

1121778354 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 568 (or 551 counting only the distinct ones).

The product of its digits is 47040, while the sum is 39.

The square root of 1121778354 is about 33492.9597676885. The cubic root of 1121778354 is about 1039.0481780854.

The spelling of 1121778354 in words is "one billion, one hundred twenty-one million, seven hundred seventy-eight thousand, three hundred fifty-four".