1378105773 has 16 divisors (see below), whose sum is σ = 2005994496. Its totient is φ = 834600240.

The previous prime is 1378105763. The next prime is 1378105801. The reversal of 1378105773 is 3775018731.

It is not a de Polignac number, because 1378105773 - 2⁸ = 1378105517 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1378105733) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32286 + ... + 61632.

It is an arithmetic number, because the mean of its divisors is an integer number (125374656).

Almost surely, 2^1378105773 is an apocalyptic number.

It is an amenable number.

1378105773 is a deficient number, since it is larger than the sum of its proper divisors (627888723).

1378105773 is a wasteful number, since it uses less digits than its factorization.

1378105773 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30784.

The product of its (nonzero) digits is 123480, while the sum is 42.

The square root of 1378105773 is about 37122.8470486842. The cubic root of 1378105773 is about 1112.8266493233.

The spelling of 1378105773 in words is "one billion, three hundred seventy-eight million, one hundred five thousand, seven hundred seventy-three".