1376388889 has 16 divisors (see below), whose sum is σ = 1415715840. Its totient is φ = 1337757120.

The previous prime is 1376388887. The next prime is 1376388911. The reversal of 1376388889 is 9888836731.

It is a cyclic number.

It is not a de Polignac number, because 1376388889 - 2¹ = 1376388887 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1376388883) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2267224 + ... + 2267830.

It is an arithmetic number, because the mean of its divisors is an integer number (88482240).

Almost surely, 2^1376388889 is an apocalyptic number.

It is an amenable number.

1376388889 is a deficient number, since it is larger than the sum of its proper divisors (39326951).

1376388889 is a wasteful number, since it uses less digits than its factorization.

1376388889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1080.

The product of its digits is 13934592, while the sum is 61.

The square root of 1376388889 is about 37099.7154840842. The cubic root of 1376388889 is about 1112.3643267448.

The spelling of 1376388889 in words is "one billion, three hundred seventy-six million, three hundred eighty-eight thousand, eight hundred eighty-nine".