1376985384 has 24 divisors (see below), whose sum is σ = 3729335610. Its totient is φ = 458995104.

The previous prime is 1376985383. The next prime is 1376985443. The reversal of 1376985384 is 4835896731.

1376985384 is a `hidden beast` number, since 13 + 7 + 6 + 98 + 538 + 4 = 666.

It can be written as a sum of positive squares in only one way, i.e., 877462884 + 499522500 = 29622^2 + 22350^2 .

It is a tau number, because it is divible by the number of its divisors (24).

It is a self number, because there is not a number n which added to its sum of digits gives 1376985384.

It is not an unprimeable number, because it can be changed into a prime (1376985383) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 9562327 + ... + 9562470.

Almost surely, 2^1376985384 is an apocalyptic number.

It is an amenable number.

1376985384 is an abundant number, since it is smaller than the sum of its proper divisors (2352350226).

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

1376985384 is a wasteful number, since it uses less digits than its factorization.

1376985384 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19124809 (or 19124802 counting only the distinct ones).

The product of its digits is 4354560, while the sum is 54.

The square root of 1376985384 is about 37107.7536911088. The cubic root of 1376985384 is about 1112.5249944980.

The spelling of 1376985384 in words is "one billion, three hundred seventy-six million, nine hundred eighty-five thousand, three hundred eighty-four".