1141990378 has 4 divisors (see below), whose sum is σ = 1712985570. Its totient is φ = 570995188.

The previous prime is 1141990363. The next prime is 1141990403. The reversal of 1141990378 is 8730991411.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8730991411 = 53 ⋅164735687.

It can be written as a sum of positive squares in only one way, i.e., 696062689 + 445927689 = 26383^2 + 21117^2 .

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 as a sum of consecutive naturals, namely, 285497593 + ... + 285497596.

Almost surely, 2^1141990378 is an apocalyptic number.

1141990378 is a deficient number, since it is larger than the sum of its proper divisors (570995192).

1141990378 is an equidigital number, since it uses as much as digits as its factorization.

1141990378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 570995191.

The product of its (nonzero) digits is 54432, while the sum is 43.

The square root of 1141990378 is about 33793.3481324358. The cubic root of 1141990378 is about 1045.2515371686.

The spelling of 1141990378 in words is "one billion, one hundred forty-one million, nine hundred ninety thousand, three hundred seventy-eight".