1281834480 has 80 divisors (see below), whose sum is σ = 4038875424. Its totient is φ = 336215040.

The previous prime is 1281834461. The next prime is 1281834503. The reversal of 1281834480 is 844381821.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29139 + ... + 58418.

Almost surely, 2^1281834480 is an apocalyptic number.

1281834480 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1281834480 is an abundant number, since it is smaller than the sum of its proper divisors (2757040944).

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

1281834480 is a wasteful number, since it uses less digits than its factorization.

1281834480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87634 (or 87628 counting only the distinct ones).

The product of its (nonzero) digits is 49152, while the sum is 39.

The square root of 1281834480 is about 35802.7160980840. The cubic root of 1281834480 is about 1086.2855016221.

The spelling of 1281834480 in words is "one billion, two hundred eighty-one million, eight hundred thirty-four thousand, four hundred eighty".