1282112091 has 64 divisors (see below), whose sum is σ = 2096115840. Its totient is φ = 769720320.

The previous prime is 1282112081. The next prime is 1282112141. The reversal of 1282112091 is 1902112821.

It is not a de Polignac number, because 1282112091 - 2⁵ = 1282112059 is a prime.

It is a super-2 number, since 2×1282112091² = 3287622827776784562, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (1282112021) 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, 4988635 + ... + 4988891.

It is an arithmetic number, because the mean of its divisors is an integer number (32751810).

Almost surely, 2^1282112091 is an apocalyptic number.

1282112091 is a deficient number, since it is larger than the sum of its proper divisors (814003749).

1282112091 is a wasteful number, since it uses less digits than its factorization.

1282112091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 573 (or 567 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 27.

The square root of 1282112091 is about 35806.5928426596. The cubic root of 1282112091 is about 1086.3639160720.

The spelling of 1282112091 in words is "one billion, two hundred eighty-two million, one hundred twelve thousand, ninety-one".