1662894144 has 112 divisors (see below), whose sum is σ = 4921747840. Its totient is φ = 550540800.

The previous prime is 1662894143. The next prime is 1662894187. The reversal of 1662894144 is 4414982661.

1662894144 is a `hidden beast` number, since 1 + 6 + 628 + 9 + 4 + 14 + 4 = 666.

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 1662894144.

It is not an unprimeable number, because it can be changed into a prime (1662894143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 257742 + ... + 264114.

Almost surely, 2^1662894144 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 1662894144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2460873920).

1662894144 is an abundant number, since it is smaller than the sum of its proper divisors (3258853696).

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

1662894144 is a wasteful number, since it uses less digits than its factorization.

1662894144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6545 (or 6529 counting only the distinct ones).

The product of its digits is 331776, while the sum is 45.

The square root of 1662894144 is about 40778.5990931518. The cubic root of 1662894144 is about 1184.7358616531.

The spelling of 1662894144 in words is "one billion, six hundred sixty-two million, eight hundred ninety-four thousand, one hundred forty-four".