1144780738 has 4 divisors (see below), whose sum is σ = 1717171110. Its totient is φ = 572390368.

The previous prime is 1144780691. The next prime is 1144780751. The reversal of 1144780738 is 8370874411.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8370874411 = 29537 ⋅283403.

It can be written as a sum of positive squares in only one way, i.e., 1133870929 + 10909809 = 33673^2 + 3303^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1144780694 and 1144780703.

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 as a sum of consecutive naturals, namely, 286195183 + ... + 286195186.

Almost surely, 2^1144780738 is an apocalyptic number.

1144780738 is a deficient number, since it is larger than the sum of its proper divisors (572390372).

1144780738 is an equidigital number, since it uses as much as digits as its factorization.

1144780738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 572390371.

The product of its (nonzero) digits is 150528, while the sum is 43.

The square root of 1144780738 is about 33834.6085835199. The cubic root of 1144780738 is about 1046.1021735782.

The spelling of 1144780738 in words is "one billion, one hundred forty-four million, seven hundred eighty thousand, seven hundred thirty-eight".