1381367473 has 4 divisors (see below), whose sum is σ = 1384486128. Its totient is φ = 1378248820.

The previous prime is 1381367441. The next prime is 1381367489. The reversal of 1381367473 is 3747631831.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1381367473 - 2⁵ = 1381367441 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1381367173) 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, 1558663 + ... + 1559548.

It is an arithmetic number, because the mean of its divisors is an integer number (346121532).

Almost surely, 2^1381367473 is an apocalyptic number.

It is an amenable number.

1381367473 is a deficient number, since it is larger than the sum of its proper divisors (3118655).

1381367473 is an equidigital number, since it uses as much as digits as its factorization.

1381367473 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3118654.

The product of its digits is 254016, while the sum is 43.

The square root of 1381367473 is about 37166.7522525173. The cubic root of 1381367473 is about 1113.7039034298.

The spelling of 1381367473 in words is "one billion, three hundred eighty-one million, three hundred sixty-seven thousand, four hundred seventy-three".