1671186020 has 48 divisors (see below), whose sum is σ = 4246784640. Its totient is φ = 539272704.

The previous prime is 1671185959. The next prime is 1671186053. The reversal of 1671186020 is 206811761.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 348710 + ... + 353469.

It is an arithmetic number, because the mean of its divisors is an integer number (88474680).

Almost surely, 2^1671186020 is an apocalyptic number.

1671186020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1671186020 is an abundant number, since it is smaller than the sum of its proper divisors (2575598620).

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

1671186020 is a wasteful number, since it uses less digits than its factorization.

1671186020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 702212 (or 702210 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 32.

The square root of 1671186020 is about 40880.1421230406. The cubic root of 1671186020 is about 1186.7017914879.

Adding to 1671186020 its reverse (206811761), we get a palindrome (1877997781).

The spelling of 1671186020 in words is "one billion, six hundred seventy-one million, one hundred eighty-six thousand, twenty".