1380767481 has 24 divisors (see below), whose sum is σ = 2016181440. Its totient is φ = 910528416.

The previous prime is 1380767477. The next prime is 1380767519. The reversal of 1380767481 is 1847670831.

It is not a de Polignac number, because 1380767481 - 2² = 1380767477 is a prime.

It is a super-2 number, since 2×1380767481² = 3813037673174170722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1380760481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 364660 + ... + 368426.

It is an arithmetic number, because the mean of its divisors is an integer number (84007560).

Almost surely, 2^1380767481 is an apocalyptic number.

It is an amenable number.

1380767481 is a deficient number, since it is larger than the sum of its proper divisors (635413959).

1380767481 is a wasteful number, since it uses less digits than its factorization.

1380767481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4205 (or 4202 counting only the distinct ones).

The product of its (nonzero) digits is 225792, while the sum is 45.

The square root of 1380767481 is about 37158.6797531882. The cubic root of 1380767481 is about 1113.5426356488.

The spelling of 1380767481 in words is "one billion, three hundred eighty million, seven hundred sixty-seven thousand, four hundred eighty-one".