1667366448 has 120 divisors (see below), whose sum is σ = 4780569024. Its totient is φ = 500353920.

The previous prime is 1667366447. The next prime is 1667366461. The reversal of 1667366448 is 8446637661.

It is a super-2 number, since 2×1667366448² = 5560221743832273408, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1667366448.

It is not an unprimeable number, because it can be changed into a prime (1667366447) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 620115 + ... + 622797.

Almost surely, 2^1667366448 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1667366448, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2390284512).

1667366448 is an abundant number, since it is smaller than the sum of its proper divisors (3113202576).

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

1667366448 is a wasteful number, since it uses less digits than its factorization.

1667366448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2823 (or 2806 counting only the distinct ones).

The product of its digits is 3483648, while the sum is 51.

The square root of 1667366448 is about 40833.3986829409. The cubic root of 1667366448 is about 1185.7970147809.

The spelling of 1667366448 in words is "one billion, six hundred sixty-seven million, three hundred sixty-six thousand, four hundred forty-eight".