1018793386478 has 64 divisors (see below), whose sum is σ = 1905301802880. Its totient is φ = 398657605632.

The previous prime is 1018793386477. The next prime is 1018793386519. The reversal of 1018793386478 is 8746833978101.

It is a super-2 number, since 2×1018793386478² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1018793386477) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 668900 + ... + 1576392.

It is an arithmetic number, because the mean of its divisors is an integer number (29770340670).

Almost surely, 2^{1018793386478} is an apocalyptic number.

1018793386478 is a deficient number, since it is larger than the sum of its proper divisors (886508416402).

1018793386478 is a wasteful number, since it uses less digits than its factorization.

1018793386478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 907661.

The product of its (nonzero) digits is 48771072, while the sum is 65.

The spelling of 1018793386478 in words is "one trillion, eighteen billion, seven hundred ninety-three million, three hundred eighty-six thousand, four hundred seventy-eight".