1283873955 has 64 divisors (see below), whose sum is σ = 2536654848. Its totient is φ = 539965440.

The previous prime is 1283873911. The next prime is 1283873957. The reversal of 1283873955 is 5593783821.

It is a happy number.

It is not a de Polignac number, because 1283873955 - 2⁶ = 1283873891 is a prime.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 1283873898 and 1283873907.

It is not an unprimeable number, because it can be changed into a prime (1283873957) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 458610 + ... + 461400.

It is an arithmetic number, because the mean of its divisors is an integer number (39635232).

Almost surely, 2^1283873955 is an apocalyptic number.

1283873955 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1283873955 is a deficient number, since it is larger than the sum of its proper divisors (1252780893).

1283873955 is a wasteful number, since it uses less digits than its factorization.

1283873955 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3156.

The product of its digits is 1814400, while the sum is 51.

The square root of 1283873955 is about 35831.1869047064. The cubic root of 1283873955 is about 1086.8613113238.

The spelling of 1283873955 in words is "one billion, two hundred eighty-three million, eight hundred seventy-three thousand, nine hundred fifty-five".