1283190020 has 24 divisors (see below), whose sum is σ = 3079656384. Its totient is φ = 439950816.

The previous prime is 1283190019. The next prime is 1283190053. The reversal of 1283190020 is 200913821.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4582682 + ... + 4582961.

It is an arithmetic number, because the mean of its divisors is an integer number (128319016).

Almost surely, 2^1283190020 is an apocalyptic number.

1283190020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1283190020 is an abundant number, since it is smaller than the sum of its proper divisors (1796466364).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1283190020 is a wasteful number, since it uses less digits than its factorization.

1283190020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9165659 (or 9165657 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 26.

The square root of 1283190020 is about 35821.6417825872. The cubic root of 1283190020 is about 1086.6682823735.

The spelling of 1283190020 in words is "one billion, two hundred eighty-three million, one hundred ninety thousand, twenty".