1283955155 has 16 divisors (see below), whose sum is σ = 1776441024. Its totient is φ = 872632320.

The previous prime is 1283955149. The next prime is 1283955161. The reversal of 1283955155 is 5515593821.

It is an interprime number because it is at equal distance from previous prime (1283955149) and next prime (1283955161).

It is not a de Polignac number, because 1283955155 - 2¹² = 1283951059 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 158366 + ... + 166275.

It is an arithmetic number, because the mean of its divisors is an integer number (111027564).

Almost surely, 2^1283955155 is an apocalyptic number.

1283955155 is a deficient number, since it is larger than the sum of its proper divisors (492485869).

1283955155 is a wasteful number, since it uses less digits than its factorization.

1283955155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 324766.

The product of its digits is 270000, while the sum is 44.

The square root of 1283955155 is about 35832.3199779194. The cubic root of 1283955155 is about 1086.8842240814.

The spelling of 1283955155 in words is "one billion, two hundred eighty-three million, nine hundred fifty-five thousand, one hundred fifty-five".