1377842481 has 10 divisors (see below), whose sum is σ = 2058258642. Its totient is φ = 918561600.

The previous prime is 1377842467. The next prime is 1377842491. The reversal of 1377842481 is 1842487731.

It can be written as a sum of positive squares in only one way, i.e., 1377597456 + 245025 = 37116^2 + 495^2 .

It is not a de Polignac number, because 1377842481 - 2¹⁰ = 1377841457 is a prime.

It is a super-2 number, since 2×1377842481² = 3796899804896470722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1377842491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 8505120 + ... + 8505281.

Almost surely, 2^1377842481 is an apocalyptic number.

It is an amenable number.

1377842481 is a deficient number, since it is larger than the sum of its proper divisors (680416161).

1377842481 is an equidigital number, since it uses as much as digits as its factorization.

1377842481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17010413 (or 17010404 counting only the distinct ones).

The product of its digits is 301056, while the sum is 45.

The square root of 1377842481 is about 37119.3006534337. The cubic root of 1377842481 is about 1112.7557749823.

The spelling of 1377842481 in words is "one billion, three hundred seventy-seven million, eight hundred forty-two thousand, four hundred eighty-one".