1375349481 has 48 divisors (see below), whose sum is σ = 2199966912. Its totient is φ = 821059200.

The previous prime is 1375349477. The next prime is 1375349491. The reversal of 1375349481 is 1849435731.

1375349481 is a `hidden beast` number, since 1 + 37 + 53 + 494 + 81 = 666.

It is not a de Polignac number, because 1375349481 - 2² = 1375349477 is a prime.

It is a super-2 number, since 2×1375349481² = 3783172389773938722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1375349491) 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 47 ways as a sum of consecutive naturals, for example, 2243331 + ... + 2243943.

It is an arithmetic number, because the mean of its divisors is an integer number (45832644).

Almost surely, 2^1375349481 is an apocalyptic number.

1375349481 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1375349481 is a deficient number, since it is larger than the sum of its proper divisors (824617431).

1375349481 is a wasteful number, since it uses less digits than its factorization.

1375349481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 934 (or 931 counting only the distinct ones).

The product of its digits is 362880, while the sum is 45.

The square root of 1375349481 is about 37085.7045369237. The cubic root of 1375349481 is about 1112.0842480659.

The spelling of 1375349481 in words is "one billion, three hundred seventy-five million, three hundred forty-nine thousand, four hundred eighty-one".