1671072012 has 24 divisors (see below), whose sum is σ = 4332409200. Its totient is φ = 557023968.

The previous prime is 1671071999. The next prime is 1671072023. The reversal of 1671072012 is 2102701761.

It is a Harshad number since it is a multiple of its sum of digits (27).

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 in 7 ways as a sum of consecutive naturals, for example, 7736337 + ... + 7736552.

It is an arithmetic number, because the mean of its divisors is an integer number (180517050).

Almost surely, 2^1671072012 is an apocalyptic number.

1671072012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1671072012 is an abundant number, since it is smaller than the sum of its proper divisors (2661337188).

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

1671072012 is a wasteful number, since it uses less digits than its factorization.

1671072012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15472902 (or 15472894 counting only the distinct ones).

The product of its (nonzero) digits is 1176, while the sum is 27.

The square root of 1671072012 is about 40878.7476814053. The cubic root of 1671072012 is about 1186.6748053489.

Adding to 1671072012 its reverse (2102701761), we get a palindrome (3773773773).

The spelling of 1671072012 in words is "one billion, six hundred seventy-one million, seventy-two thousand, twelve".