1361427278 has 16 divisors (see below), whose sum is σ = 2063957760. Its totient is φ = 673452000.

The previous prime is 1361427229. The next prime is 1361427283. The reversal of 1361427278 is 8727241631.

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, 471443 + ... + 474321.

It is an arithmetic number, because the mean of its divisors is an integer number (128997360).

Almost surely, 2^1361427278 is an apocalyptic number.

1361427278 is a deficient number, since it is larger than the sum of its proper divisors (702530482).

1361427278 is a wasteful number, since it uses less digits than its factorization.

1361427278 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5323.

The product of its digits is 112896, while the sum is 41.

The square root of 1361427278 is about 36897.5240090714. The cubic root of 1361427278 is about 1108.3190958630.

The spelling of 1361427278 in words is "one billion, three hundred sixty-one million, four hundred twenty-seven thousand, two hundred seventy-eight".