1889142903 has 6 divisors (see below), whose sum is σ = 2728761984. Its totient is φ = 1259428596.

The previous prime is 1889142859. The next prime is 1889142917. The reversal of 1889142903 is 3092419881.

It is not a de Polignac number, because 1889142903 - 2¹⁸ = 1888880759 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1889142943) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 104952375 + ... + 104952392.

It is an arithmetic number, because the mean of its divisors is an integer number (454793664).

Almost surely, 2^1889142903 is an apocalyptic number.

1889142903 is a deficient number, since it is larger than the sum of its proper divisors (839619081).

1889142903 is a wasteful number, since it uses less digits than its factorization.

1889142903 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 209904773 (or 209904770 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 45.

The square root of 1889142903 is about 43464.2715687264. The cubic root of 1889142903 is about 1236.1986653202.

The spelling of 1889142903 in words is "one billion, eight hundred eighty-nine million, one hundred forty-two thousand, nine hundred three".