1278488045 has 8 divisors (see below), whose sum is σ = 1546266624. Its totient is φ = 1014736464.

The previous prime is 1278488027. The next prime is 1278488059. The reversal of 1278488045 is 5408848721.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1278488045 - 2⁶ = 1278487981 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1006049 + ... + 1007318.

It is an arithmetic number, because the mean of its divisors is an integer number (193283328).

Almost surely, 2^1278488045 is an apocalyptic number.

It is an amenable number.

1278488045 is a deficient number, since it is larger than the sum of its proper divisors (267778579).

1278488045 is a wasteful number, since it uses less digits than its factorization.

1278488045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2013499.

The product of its (nonzero) digits is 573440, while the sum is 47.

The square root of 1278488045 is about 35755.9511829849. The cubic root of 1278488045 is about 1085.3393701503.

The spelling of 1278488045 in words is "one billion, two hundred seventy-eight million, four hundred eighty-eight thousand, forty-five".