1281016734 has 32 divisors (see below), whose sum is σ = 2590963200. Its totient is φ = 422196000.

The previous prime is 1281016721. The next prime is 1281016747. The reversal of 1281016734 is 4376101821.

1281016734 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (1281016721) and next prime (1281016747).

It is a junction number, because it is equal to n+sod(n) for n = 1281016695 and 1281016704.

It is a congruent 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, 847039 + ... + 848549.

It is an arithmetic number, because the mean of its divisors is an integer number (80967600).

Almost surely, 2^1281016734 is an apocalyptic number.

1281016734 is an abundant number, since it is smaller than the sum of its proper divisors (1309946466).

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

1281016734 is a wasteful number, since it uses less digits than its factorization.

1281016734 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3016.

The product of its (nonzero) digits is 8064, while the sum is 33.

The square root of 1281016734 is about 35791.2941090428. The cubic root of 1281016734 is about 1086.0544539575.

The spelling of 1281016734 in words is "one billion, two hundred eighty-one million, sixteen thousand, seven hundred thirty-four".