1667601012 has 48 divisors (see below), whose sum is σ = 4851205632. Its totient is φ = 433142880.

The previous prime is 1667600999. The next prime is 1667601037. The reversal of 1667601012 is 2101067661.

It is a congruent 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, 901458 + ... + 903305.

It is an arithmetic number, because the mean of its divisors is an integer number (101066784).

Almost surely, 2^1667601012 is an apocalyptic number.

1667601012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1667601012 is an abundant number, since it is smaller than the sum of its proper divisors (3183604620).

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

1667601012 is a wasteful number, since it uses less digits than its factorization.

1667601012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1804788 (or 1804786 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 30.

The square root of 1667601012 is about 40836.2707895812. The cubic root of 1667601012 is about 1185.8526178846.

Adding to 1667601012 its reverse (2101067661), we get a palindrome (3768668673).

The spelling of 1667601012 in words is "one billion, six hundred sixty-seven million, six hundred one thousand, twelve".