1678693812954 has 32 divisors (see below), whose sum is σ = 3378035016000. Its totient is φ = 556126875264.

The previous prime is 1678693812953. The next prime is 1678693812973. The reversal of 1678693812954 is 4592183968761.

It is a super-2 number, since 2×1678693812954² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1678693812953) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1484542 + ... + 2358230.

It is an arithmetic number, because the mean of its divisors is an integer number (105563594250).

Almost surely, 2^{1678693812954} is an apocalyptic number.

1678693812954 is an abundant number, since it is smaller than the sum of its proper divisors (1699341203046).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1678693812954 is a wasteful number, since it uses less digits than its factorization.

1678693812954 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 875662.

The product of its digits is 156764160, while the sum is 69.

The spelling of 1678693812954 in words is "one trillion, six hundred seventy-eight billion, six hundred ninety-three million, eight hundred twelve thousand, nine hundred fifty-four".