1377113378 has 4 divisors (see below), whose sum is σ = 2065670070. Its totient is φ = 688556688.

The previous prime is 1377113357. The next prime is 1377113383. The reversal of 1377113378 is 8733117731.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8733117731 = 13 ⋅671778287.

It can be written as a sum of positive squares in only one way, i.e., 1205686729 + 171426649 = 34723^2 + 13093^2 .

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 344278343 + ... + 344278346.

Almost surely, 2^1377113378 is an apocalyptic number.

1377113378 is a deficient number, since it is larger than the sum of its proper divisors (688556692).

1377113378 is an equidigital number, since it uses as much as digits as its factorization.

1377113378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 688556691.

The product of its digits is 74088, while the sum is 41.

The square root of 1377113378 is about 37109.4782771194. The cubic root of 1377113378 is about 1112.5594640269.

The spelling of 1377113378 in words is "one billion, three hundred seventy-seven million, one hundred thirteen thousand, three hundred seventy-eight".