1361660478 has 8 divisors (see below), whose sum is σ = 2723320968. Its totient is φ = 453886824.

The previous prime is 1361660473. The next prime is 1361660501. The reversal of 1361660478 is 8740661631.

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

1361660478 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1361660473) 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, 113471701 + ... + 113471712.

It is an arithmetic number, because the mean of its divisors is an integer number (340415121).

Almost surely, 2^1361660478 is an apocalyptic number.

1361660478 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1361660478 is a wasteful number, since it uses less digits than its factorization.

1361660478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 226943418.

The product of its (nonzero) digits is 145152, while the sum is 42.

The square root of 1361660478 is about 36900.6839774007. The cubic root of 1361660478 is about 1108.3823738805.

The spelling of 1361660478 in words is "one billion, three hundred sixty-one million, six hundred sixty thousand, four hundred seventy-eight".