1889868099 has 32 divisors (see below), whose sum is σ = 2921728000. Its totient is φ = 1064254464.

The previous prime is 1889868091. The next prime is 1889868107. The reversal of 1889868099 is 9908689881.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1889868091) and next prime (1889868107).

It is not a de Polignac number, because 1889868099 - 2³ = 1889868091 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1889868091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1673367 + ... + 1674495.

It is an arithmetic number, because the mean of its divisors is an integer number (91304000).

Almost surely, 2^1889868099 is an apocalyptic number.

1889868099 is a deficient number, since it is larger than the sum of its proper divisors (1031859901).

1889868099 is a wasteful number, since it uses less digits than its factorization.

1889868099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2227.

The product of its (nonzero) digits is 17915904, while the sum is 66.

The square root of 1889868099 is about 43472.6132064775. The cubic root of 1889868099 is about 1236.3568272813.

The spelling of 1889868099 in words is "one billion, eight hundred eighty-nine million, eight hundred sixty-eight thousand, ninety-nine".