1381342155 has 16 divisors (see below), whose sum is σ = 2232032544. Its totient is φ = 729420800.

The previous prime is 1381342153. The next prime is 1381342163. The reversal of 1381342155 is 5512431831.

It is not a de Polignac number, because 1381342155 - 2¹ = 1381342153 is a prime.

It is a super-2 number, since 2×1381342155² = 3816212298360088050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1381342153) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 454374 + ... + 457403.

It is an arithmetic number, because the mean of its divisors is an integer number (139502034).

Almost surely, 2^1381342155 is an apocalyptic number.

1381342155 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1381342155 is a deficient number, since it is larger than the sum of its proper divisors (850690389).

1381342155 is a wasteful number, since it uses less digits than its factorization.

1381342155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 911886.

The product of its digits is 14400, while the sum is 33.

The square root of 1381342155 is about 37166.4116508441. The cubic root of 1381342155 is about 1113.6970993200.

Adding to 1381342155 its reverse (5512431831), we get a palindrome (6893773986).

The spelling of 1381342155 in words is "one billion, three hundred eighty-one million, three hundred forty-two thousand, one hundred fifty-five".