1283813503 has 16 divisors (see below), whose sum is σ = 1493743680. Its totient is φ = 1080576000.

The previous prime is 1283813491. The next prime is 1283813513. The reversal of 1283813503 is 3053183821.

It is not a de Polignac number, because 1283813503 - 2¹³ = 1283805311 is a prime.

It is a super-2 number, since 2×1283813503² = 3296354220970262018, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1283813513) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 297183 + ... + 301471.

It is an arithmetic number, because the mean of its divisors is an integer number (93358980).

Almost surely, 2^1283813503 is an apocalyptic number.

1283813503 is a deficient number, since it is larger than the sum of its proper divisors (209930177).

1283813503 is an equidigital number, since it uses as much as digits as its factorization.

1283813503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5058.

The product of its (nonzero) digits is 17280, while the sum is 34.

The square root of 1283813503 is about 35830.3433279671. The cubic root of 1283813503 is about 1086.8442525435.

The spelling of 1283813503 in words is "one billion, two hundred eighty-three million, eight hundred thirteen thousand, five hundred three".