1903142763 has 24 divisors (see below), whose sum is σ = 2868210000. Its totient is φ = 1247195808.

The previous prime is 1903142749. The next prime is 1903142779. The reversal of 1903142763 is 3672413091.

It is not a de Polignac number, because 1903142763 - 2¹⁸ = 1902880619 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1903142363) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 83863 + ... + 104111.

It is an arithmetic number, because the mean of its divisors is an integer number (119508750).

Almost surely, 2^1903142763 is an apocalyptic number.

1903142763 is a deficient number, since it is larger than the sum of its proper divisors (965067237).

1903142763 is an equidigital number, since it uses as much as digits as its factorization.

1903142763 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20376 (or 20311 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 36.

The square root of 1903142763 is about 43625.0245042911. The cubic root of 1903142763 is about 1239.2448495691.

The spelling of 1903142763 in words is "one billion, nine hundred three million, one hundred forty-two thousand, seven hundred sixty-three".