1201784378 has 16 divisors (see below), whose sum is σ = 1862217216. Its totient is φ = 581074320.

The previous prime is 1201784359. The next prime is 1201784399. The reversal of 1201784378 is 8734871021.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 86075 + ... + 99057.

It is an arithmetic number, because the mean of its divisors is an integer number (116388576).

Almost surely, 2^1201784378 is an apocalyptic number.

1201784378 is a deficient number, since it is larger than the sum of its proper divisors (660432838).

1201784378 is a wasteful number, since it uses less digits than its factorization.

1201784378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14509.

The product of its (nonzero) digits is 75264, while the sum is 41.

The square root of 1201784378 is about 34666.7618620488. The cubic root of 1201784378 is about 1063.1850262615.

The spelling of 1201784378 in words is "one billion, two hundred one million, seven hundred eighty-four thousand, three hundred seventy-eight".