1078146893989 has 8 divisors (see below), whose sum is σ = 1185880582080. Its totient is φ = 980133538780.

The previous prime is 1078146893977. The next prime is 1078146894017. The reversal of 1078146893989 is 9893986418701.

It is a de Polignac number, because none of the positive numbers 2^k-1078146893989 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1078146893389) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 405012529 + ... + 405015190.

It is an arithmetic number, because the mean of its divisors is an integer number (148235072760).

Almost surely, 2^{1078146893989} is an apocalyptic number.

It is an amenable number.

1078146893989 is a deficient number, since it is larger than the sum of its proper divisors (107733688091).

1078146893989 is an frugal number, since it uses more digits than its factorization.

1078146893989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 810027752 (or 810027730 counting only the distinct ones).

The product of its (nonzero) digits is 188116992, while the sum is 73.

The spelling of 1078146893989 in words is "one trillion, seventy-eight billion, one hundred forty-six million, eight hundred ninety-three thousand, nine hundred eighty-nine".