1009378781192 has 64 divisors (see below), whose sum is σ = 2000931672960. Its totient is φ = 476838835200.

The previous prime is 1009378781189. The next prime is 1009378781231. The reversal of 1009378781192 is 2911878739001.

It is a happy number.

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 in 15 ways as a sum of consecutive naturals, for example, 904592 + ... + 1684352.

It is an arithmetic number, because the mean of its divisors is an integer number (31264557390).

Almost surely, 2^{1009378781192} is an apocalyptic number.

It is an amenable number.

1009378781192 is a deficient number, since it is larger than the sum of its proper divisors (991552891768).

1009378781192 is a wasteful number, since it uses less digits than its factorization.

1009378781192 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 779934 (or 779930 counting only the distinct ones).

The product of its (nonzero) digits is 1524096, while the sum is 56.

The spelling of 1009378781192 in words is "one trillion, nine billion, three hundred seventy-eight million, seven hundred eighty-one thousand, one hundred ninety-two".