1283998156 has 18 divisors (see below), whose sum is σ = 2613853788. Its totient is φ = 550284840.

The previous prime is 1283998147. The next prime is 1283998159. The reversal of 1283998156 is 6518993821.

It is a super-2 number, since 2×1283998156² = 3297302529222800672, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1283998159) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3275310 + ... + 3275701.

Almost surely, 2^1283998156 is an apocalyptic number.

It is an amenable number.

1283998156 is an abundant number, since it is smaller than the sum of its proper divisors (1329855632).

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

1283998156 is a wasteful number, since it uses less digits than its factorization.

1283998156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6551029 (or 6551020 counting only the distinct ones).

The product of its digits is 933120, while the sum is 52.

The square root of 1283998156 is about 35832.9200038177. The cubic root of 1283998156 is about 1086.8963575755.

The spelling of 1283998156 in words is "one billion, two hundred eighty-three million, nine hundred ninety-eight thousand, one hundred fifty-six".