1678697044 has 24 divisors (see below), whose sum is σ = 3226789440. Its totient is φ = 760598784.

The previous prime is 1678697029. The next prime is 1678697047. The reversal of 1678697044 is 4407968761.

It is a junction number, because it is equal to n+sod(n) for n = 1678696982 and 1678697000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1678697047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 478429 + ... + 481924.

It is an arithmetic number, because the mean of its divisors is an integer number (134449560).

Almost surely, 2^1678697044 is an apocalyptic number.

It is an amenable number.

1678697044 is a deficient number, since it is larger than the sum of its proper divisors (1548092396).

1678697044 is a wasteful number, since it uses less digits than its factorization.

1678697044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 960399 (or 960397 counting only the distinct ones).

The product of its (nonzero) digits is 2032128, while the sum is 52.

The square root of 1678697044 is about 40971.9055451415. The cubic root of 1678697044 is about 1188.4769829411.

The spelling of 1678697044 in words is "one billion, six hundred seventy-eight million, six hundred ninety-seven thousand, forty-four".