1886749668 has 36 divisors (see below), whose sum is σ = 4771906048. Its totient is φ = 628570800.

The previous prime is 1886749663. The next prime is 1886749673. The reversal of 1886749668 is 8669476881.

1886749668 is a `hidden beast` number, since 1 + 8 + 86 + 7 + 496 + 68 = 666.

It is an interprime number because it is at equal distance from previous prime (1886749663) and next prime (1886749673).

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×1886749668² = 7119648619396220448, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1886749663) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 56805 + ... + 83667.

Almost surely, 2^1886749668 is an apocalyptic number.

1886749668 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1886749668 is an abundant number, since it is smaller than the sum of its proper divisors (2885156380).

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

1886749668 is a wasteful number, since it uses less digits than its factorization.

1886749668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28824 (or 28819 counting only the distinct ones).

The product of its digits is 27869184, while the sum is 63.

The square root of 1886749668 is about 43436.7317831349. The cubic root of 1886749668 is about 1235.6764242366.

The spelling of 1886749668 in words is "one billion, eight hundred eighty-six million, seven hundred forty-nine thousand, six hundred sixty-eight".