1678653136 has 10 divisors (see below), whose sum is σ = 3252390482. Its totient is φ = 839326560.

The previous prime is 1678653121. The next prime is 1678653149. The reversal of 1678653136 is 6313568761.

It can be written as a sum of positive squares in only one way, i.e., 1521000000 + 157653136 = 39000^2 + 12556^2 .

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 52457895 + ... + 52457926.

Almost surely, 2^1678653136 is an apocalyptic number.

1678653136 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1678653136 is a deficient number, since it is larger than the sum of its proper divisors (1573737346).

1678653136 is a wasteful number, since it uses less digits than its factorization.

1678653136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104915829 (or 104915823 counting only the distinct ones).

The product of its digits is 544320, while the sum is 46.

The square root of 1678653136 is about 40971.3697110555. The cubic root of 1678653136 is about 1188.4666209161.

The spelling of 1678653136 in words is "one billion, six hundred seventy-eight million, six hundred fifty-three thousand, one hundred thirty-six".