1278581048 has 16 divisors (see below), whose sum is σ = 2399366880. Its totient is φ = 638749888.

The previous prime is 1278581047. The next prime is 1278581071. The reversal of 1278581048 is 8401858721.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1278581047) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 57440 + ... + 76527.

It is an arithmetic number, because the mean of its divisors is an integer number (149960430).

Almost surely, 2^1278581048 is an apocalyptic number.

It is an amenable number.

1278581048 is a deficient number, since it is larger than the sum of its proper divisors (1120785832).

1278581048 is a wasteful number, since it uses less digits than its factorization.

1278581048 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135166 (or 135162 counting only the distinct ones).

The product of its (nonzero) digits is 143360, while the sum is 44.

The square root of 1278581048 is about 35757.2516840990. The cubic root of 1278581048 is about 1085.3656870096.

The spelling of 1278581048 in words is "one billion, two hundred seventy-eight million, five hundred eighty-one thousand, forty-eight".