1376749129 has 12 divisors (see below), whose sum is σ = 1628672400. Its totient is φ = 1160067048.

The previous prime is 1376749093. The next prime is 1376749181. The reversal of 1376749129 is 9219476731.

It is not a de Polignac number, because 1376749129 - 2¹¹ = 1376747081 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1376749229) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 235219 + ... + 241000.

It is an arithmetic number, because the mean of its divisors is an integer number (135722700).

Almost surely, 2^1376749129 is an apocalyptic number.

It is an amenable number.

1376749129 is a deficient number, since it is larger than the sum of its proper divisors (251923271).

1376749129 is an equidigital number, since it uses as much as digits as its factorization.

1376749129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 476292 (or 476285 counting only the distinct ones).

The product of its digits is 571536, while the sum is 49.

The square root of 1376749129 is about 37104.5701902070. The cubic root of 1376749129 is about 1112.4613640414.

The spelling of 1376749129 in words is "one billion, three hundred seventy-six million, seven hundred forty-nine thousand, one hundred twenty-nine".