1900889855 has 16 divisors (see below), whose sum is σ = 2430895104. Its totient is φ = 1423641120.

The previous prime is 1900889849. The next prime is 1900889909. The reversal of 1900889855 is 5589880091.

It is a de Polignac number, because none of the positive numbers 2^k-1900889855 is a prime.

It is a super-2 number, since 2×1900889855² = 7226764481683842050, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1900889797 and 1900889806.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 170441 + ... + 181250.

It is an arithmetic number, because the mean of its divisors is an integer number (151930944).

Almost surely, 2^1900889855 is an apocalyptic number.

1900889855 is a deficient number, since it is larger than the sum of its proper divisors (530005249).

1900889855 is a wasteful number, since it uses less digits than its factorization.

1900889855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 351766.

The product of its (nonzero) digits is 1036800, while the sum is 53.

The square root of 1900889855 is about 43599.1955774416. The cubic root of 1900889855 is about 1238.7556575014.

The spelling of 1900889855 in words is "one billion, nine hundred million, eight hundred eighty-nine thousand, eight hundred fifty-five".