1667005158 has 64 divisors (see below), whose sum is σ = 4164733440. Its totient is φ = 433078272.

The previous prime is 1667005121. The next prime is 1667005169. The reversal of 1667005158 is 8515007661.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13798 + ... + 59366.

It is an arithmetic number, because the mean of its divisors is an integer number (65073960).

Almost surely, 2^1667005158 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1667005158, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2082366720).

1667005158 is an abundant number, since it is smaller than the sum of its proper divisors (2497728282).

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

1667005158 is a wasteful number, since it uses less digits than its factorization.

1667005158 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45661.

The product of its (nonzero) digits is 50400, while the sum is 39.

The square root of 1667005158 is about 40828.9744911625. The cubic root of 1667005158 is about 1185.7113612340.

The spelling of 1667005158 in words is "one billion, six hundred sixty-seven million, five thousand, one hundred fifty-eight".