1381350655 has 4 divisors (see below), whose sum is σ = 1657620792. Its totient is φ = 1105080520.

The previous prime is 1381350631. The next prime is 1381350661. The reversal of 1381350655 is 5560531831.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 1381350655 - 2²⁵ = 1347796223 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 3 ways as a sum of consecutive naturals, for example, 138135061 + ... + 138135070.

It is an arithmetic number, because the mean of its divisors is an integer number (414405198).

Almost surely, 2^1381350655 is an apocalyptic number.

1381350655 is a deficient number, since it is larger than the sum of its proper divisors (276270137).

1381350655 is an equidigital number, since it uses as much as digits as its factorization.

1381350655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 276270136.

The product of its (nonzero) digits is 54000, while the sum is 37.

The square root of 1381350655 is about 37166.5260012286. The cubic root of 1381350655 is about 1113.6993836698.

The spelling of 1381350655 in words is "one billion, three hundred eighty-one million, three hundred fifty thousand, six hundred fifty-five".