1903130855 has 4 divisors (see below), whose sum is σ = 2283757032. Its totient is φ = 1522504680.

The previous prime is 1903130849. The next prime is 1903130861. The reversal of 1903130855 is 5580313091.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (1903130849) and next prime (1903130861).

It is not a de Polignac number, because 1903130855 - 2⁸ = 1903130599 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 190313081 + ... + 190313090.

It is an arithmetic number, because the mean of its divisors is an integer number (570939258).

Almost surely, 2^1903130855 is an apocalyptic number.

1903130855 is a deficient number, since it is larger than the sum of its proper divisors (380626177).

1903130855 is an equidigital number, since it uses as much as digits as its factorization.

1903130855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 380626176.

The product of its (nonzero) digits is 16200, while the sum is 35.

The square root of 1903130855 is about 43624.8880227789. Note that the first 3 decimals coincide. The cubic root of 1903130855 is about 1239.2422649043.

The spelling of 1903130855 in words is "one billion, nine hundred three million, one hundred thirty thousand, eight hundred fifty-five".