1681158192 has 80 divisors (see below), whose sum is σ = 4972300800. Its totient is φ = 479471616.

The previous prime is 1681158191. The next prime is 1681158253. The reversal of 1681158192 is 2918511861.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (1681158191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 197088 + ... + 205440.

It is an arithmetic number, because the mean of its divisors is an integer number (62153760).

Almost surely, 2^1681158192 is an apocalyptic number.

1681158192 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1681158192, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2486150400).

1681158192 is an abundant number, since it is smaller than the sum of its proper divisors (3291142608).

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

1681158192 is a wasteful number, since it uses less digits than its factorization.

1681158192 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8970 (or 8964 counting only the distinct ones).

The product of its digits is 34560, while the sum is 42.

The square root of 1681158192 is about 41001.9291253473. The cubic root of 1681158192 is about 1189.0575104522.

The spelling of 1681158192 in words is "one billion, six hundred eighty-one million, one hundred fifty-eight thousand, one hundred ninety-two".