1376774556 has 12 divisors (see below), whose sum is σ = 3212473992. Its totient is φ = 458924848.

The previous prime is 1376774543. The next prime is 1376774569. The reversal of 1376774556 is 6554776731.

1376774556 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (1376774543) and next prime (1376774569).

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-3 number, since 3×1376774556³ (a number of 28 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1376774499 and 1376774508.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 57365595 + ... + 57365618.

It is an arithmetic number, because the mean of its divisors is an integer number (267706166).

Almost surely, 2^1376774556 is an apocalyptic number.

It is an amenable number.

1376774556 is an abundant number, since it is smaller than the sum of its proper divisors (1835699436).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1376774556 is a wasteful number, since it uses less digits than its factorization.

1376774556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114731220 (or 114731218 counting only the distinct ones).

The product of its digits is 3704400, while the sum is 51.

The square root of 1376774556 is about 37104.9128283574. The cubic root of 1376774556 is about 1112.4682126338.

The spelling of 1376774556 in words is "one billion, three hundred seventy-six million, seven hundred seventy-four thousand, five hundred fifty-six".