1380871123 has 4 divisors (see below), whose sum is σ = 1381610248. Its totient is φ = 1380132000.

The previous prime is 1380871111. The next prime is 1380871157. The reversal of 1380871123 is 3211780831.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1380871123 is a prime.

It is a super-2 number, since 2×1380871123² = 3813610116670562258, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1380874123) 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 3 ways as a sum of consecutive naturals, for example, 366753 + ... + 370498.

It is an arithmetic number, because the mean of its divisors is an integer number (345402562).

Almost surely, 2^1380871123 is an apocalyptic number.

1380871123 is a deficient number, since it is larger than the sum of its proper divisors (739125).

1380871123 is an equidigital number, since it uses as much as digits as its factorization.

1380871123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 739124.

The product of its (nonzero) digits is 8064, while the sum is 34.

The square root of 1380871123 is about 37160.0743137039. The cubic root of 1380871123 is about 1113.5704962167.

The spelling of 1380871123 in words is "one billion, three hundred eighty million, eight hundred seventy-one thousand, one hundred twenty-three".