1680925158 has 24 divisors (see below), whose sum is σ = 3973096296. Its totient is φ = 509371200.

The previous prime is 1680925087. The next prime is 1680925159. The reversal of 1680925158 is 8515290861.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1680925159) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4244563 + ... + 4244958.

It is an arithmetic number, because the mean of its divisors is an integer number (165545679).

Almost surely, 2^1680925158 is an apocalyptic number.

1680925158 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1680925158 is an abundant number, since it is smaller than the sum of its proper divisors (2292171138).

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

1680925158 is a wasteful number, since it uses less digits than its factorization.

1680925158 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8489540 (or 8489537 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 45.

The square root of 1680925158 is about 40999.0872825237. The cubic root of 1680925158 is about 1189.0025674506.

The spelling of 1680925158 in words is "one billion, six hundred eighty million, nine hundred twenty-five thousand, one hundred fifty-eight".