1209868384 has 12 divisors (see below), whose sum is σ = 2381928444. Its totient is φ = 604934176.

The previous prime is 1209868381. The next prime is 1209868391. The reversal of 1209868384 is 4838689021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1209868381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18904162 + ... + 18904225.

It is an arithmetic number, because the mean of its divisors is an integer number (198494037).

Almost surely, 2^1209868384 is an apocalyptic number.

It is an amenable number.

1209868384 is a deficient number, since it is larger than the sum of its proper divisors (1172060060).

1209868384 is an equidigital number, since it uses as much as digits as its factorization.

1209868384 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37808397 (or 37808389 counting only the distinct ones).

The product of its (nonzero) digits is 663552, while the sum is 49.

The square root of 1209868384 is about 34783.1623634195. The cubic root of 1209868384 is about 1065.5635989183.

The spelling of 1209868384 in words is "one billion, two hundred nine million, eight hundred sixty-eight thousand, three hundred eighty-four".