1009780123 has 8 divisors (see below), whose sum is σ = 1112486256. Its totient is φ = 908892000.

The previous prime is 1009780097. The next prime is 1009780129. The reversal of 1009780123 is 3210879001.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1009780123 - 2¹⁷ = 1009649051 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1009780129) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 453336 + ... + 455557.

It is an arithmetic number, because the mean of its divisors is an integer number (139060782).

Almost surely, 2^1009780123 is an apocalyptic number.

1009780123 is a deficient number, since it is larger than the sum of its proper divisors (102706133).

1009780123 is a wasteful number, since it uses less digits than its factorization.

1009780123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 909005.

The product of its (nonzero) digits is 3024, while the sum is 31.

The square root of 1009780123 is about 31777.0376687318. The cubic root of 1009780123 is about 1003.2494705043.

The spelling of 1009780123 in words is "one billion, nine million, seven hundred eighty thousand, one hundred twenty-three".