1667934912 has 448 divisors, whose sum is σ = 5722112000. Its totient is φ = 426746880.

The previous prime is 1667934901. The next prime is 1667934941. The reversal of 1667934912 is 2194397661.

It is a tau number, because it is divible by the number of its divisors (448).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 38789163 + ... + 38789205.

Almost surely, 2^1667934912 is an apocalyptic number.

1667934912 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 1667934912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2861056000).

1667934912 is an abundant number, since it is smaller than the sum of its proper divisors (4054177088).

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

1667934912 is a wasteful number, since it uses less digits than its factorization.

1667934912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129 (or 105 counting only the distinct ones).

The product of its digits is 489888, while the sum is 48.

The square root of 1667934912 is about 40840.3588622823. The cubic root of 1667934912 is about 1185.9317594703.

The spelling of 1667934912 in words is "one billion, six hundred sixty-seven million, nine hundred thirty-four thousand, nine hundred twelve".