1376471385 has 24 divisors (see below), whose sum is σ = 2526231240. Its totient is φ = 690934272.

The previous prime is 1376471333. The next prime is 1376471401. The reversal of 1376471385 is 5831746731.

It can be written as a sum of positive squares in 4 ways, for example, as 8433216 + 1368038169 = 2904^2 + 36987^2 .

It is not a de Polignac number, because 1376471385 - 2²⁶ = 1309362521 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 1376471385.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 898890 + ... + 900419.

It is an arithmetic number, because the mean of its divisors is an integer number (105259635).

Almost surely, 2^1376471385 is an apocalyptic number.

1376471385 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1376471385 is a deficient number, since it is larger than the sum of its proper divisors (1149759855).

1376471385 is a wasteful number, since it uses less digits than its factorization.

1376471385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1799337 (or 1799334 counting only the distinct ones).

The product of its digits is 423360, while the sum is 45.

The square root of 1376471385 is about 37100.8272818815. The cubic root of 1376471385 is about 1112.3865500605.

The spelling of 1376471385 in words is "one billion, three hundred seventy-six million, four hundred seventy-one thousand, three hundred eighty-five".