1145292778 has 32 divisors (see below), whose sum is σ = 2037456000. Its totient is φ = 482503392.

The previous prime is 1145292767. The next prime is 1145292779. The reversal of 1145292778 is 8772925411.

It is not an unprimeable number, because it can be changed into a prime (1145292779) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26326 + ... + 54622.

It is an arithmetic number, because the mean of its divisors is an integer number (63670500).

Almost surely, 2^1145292778 is an apocalyptic number.

1145292778 is a deficient number, since it is larger than the sum of its proper divisors (892163222).

1145292778 is an equidigital number, since it uses as much as digits as its factorization.

1145292778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28379 (or 28365 counting only the distinct ones).

The product of its digits is 282240, while the sum is 46.

The square root of 1145292778 is about 33842.1745459715. The cubic root of 1145292778 is about 1046.2581179430.

The spelling of 1145292778 in words is "one billion, one hundred forty-five million, two hundred ninety-two thousand, seven hundred seventy-eight".