1381382741 has 4 divisors (see below), whose sum is σ = 1381644000. Its totient is φ = 1381121484.

The previous prime is 1381382711. The next prime is 1381382771. The reversal of 1381382741 is 1472831831.

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 an interprime number because it is at equal distance from previous prime (1381382711) and next prime (1381382771).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1381382741 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1381382695 and 1381382704.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1381382711) 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, 122531 + ... + 133328.

It is an arithmetic number, because the mean of its divisors is an integer number (345411000).

Almost surely, 2^1381382741 is an apocalyptic number.

It is an amenable number.

1381382741 is a deficient number, since it is larger than the sum of its proper divisors (261259).

1381382741 is an equidigital number, since it uses as much as digits as its factorization.

1381382741 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 261258.

The product of its digits is 32256, while the sum is 38.

The square root of 1381382741 is about 37166.9576505799. The cubic root of 1381382741 is about 1113.7080066026.

The spelling of 1381382741 in words is "one billion, three hundred eighty-one million, three hundred eighty-two thousand, seven hundred forty-one".