1138873377 has 4 divisors (see below), whose sum is σ = 1518497840. Its totient is φ = 759248916.

The previous prime is 1138873271. The next prime is 1138873387. The reversal of 1138873377 is 7733788311.

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, and also an emirpimes, since its reverse is a distinct semiprime: 7733788311 = 3 ⋅2577929437.

It is not a de Polignac number, because 1138873377 - 2¹¹ = 1138871329 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1138873387) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 189812227 + ... + 189812232.

It is an arithmetic number, because the mean of its divisors is an integer number (379624460).

Almost surely, 2^1138873377 is an apocalyptic number.

It is an amenable number.

1138873377 is a deficient number, since it is larger than the sum of its proper divisors (379624463).

1138873377 is an equidigital number, since it uses as much as digits as its factorization.

1138873377 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 379624462.

The product of its digits is 592704, while the sum is 48.

The square root of 1138873377 is about 33747.1980614687. The cubic root of 1138873377 is about 1044.2996847782.

The spelling of 1138873377 in words is "one billion, one hundred thirty-eight million, eight hundred seventy-three thousand, three hundred seventy-seven".