1141290778 has 32 divisors (see below), whose sum is σ = 1784661120. Its totient is φ = 546981120.

The previous prime is 1141290769. The next prime is 1141290827. The reversal of 1141290778 is 8770921411.

It is a self number, because there is not a number n which added to its sum of digits gives 1141290778.

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 15 ways as a sum of consecutive naturals, for example, 2497126 + ... + 2497582.

It is an arithmetic number, because the mean of its divisors is an integer number (55770660).

Almost surely, 2^1141290778 is an apocalyptic number.

1141290778 is a deficient number, since it is larger than the sum of its proper divisors (643370342).

1141290778 is a wasteful number, since it uses less digits than its factorization.

1141290778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 982.

The product of its (nonzero) digits is 28224, while the sum is 40.

The square root of 1141290778 is about 33782.9953970929. The cubic root of 1141290778 is about 1045.0380481099.

The spelling of 1141290778 in words is "one billion, one hundred forty-one million, two hundred ninety thousand, seven hundred seventy-eight".