1867116828 has 12 divisors (see below), whose sum is σ = 4356605960. Its totient is φ = 622372272.

The previous prime is 1867116827. The next prime is 1867116863. The reversal of 1867116828 is 8286117681.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×1867116828² = 6972250498801563168, which contains 22 as substring.

It is a hoax number, since the sum of its digits (48) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1867116821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 77796523 + ... + 77796546.

Almost surely, 2^1867116828 is an apocalyptic number.

It is an amenable number.

1867116828 is an abundant number, since it is smaller than the sum of its proper divisors (2489489132).

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

1867116828 is a wasteful number, since it uses less digits than its factorization.

1867116828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155593076 (or 155593074 counting only the distinct ones).

The product of its digits is 258048, while the sum is 48.

The square root of 1867116828 is about 43210.1472804711. The cubic root of 1867116828 is about 1231.3754696774.

The spelling of 1867116828 in words is "one billion, eight hundred sixty-seven million, one hundred sixteen thousand, eight hundred twenty-eight".