1376809442 has 16 divisors (see below), whose sum is σ = 2132769912. Its totient is φ = 666092160.

The previous prime is 1376809439. The next prime is 1376809453. The reversal of 1376809442 is 2449086731.

It can be written as a sum of positive squares in 4 ways, for example, as 1283860561 + 92948881 = 35831^2 + 9641^2 .

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 1376809393 and 1376809402.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38003 + ... + 64790.

Almost surely, 2^1376809442 is an apocalyptic number.

1376809442 is a deficient number, since it is larger than the sum of its proper divisors (755960470).

1376809442 is a wasteful number, since it uses less digits than its factorization.

1376809442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103013.

The product of its (nonzero) digits is 290304, while the sum is 44.

The square root of 1376809442 is about 37105.3829248534. The cubic root of 1376809442 is about 1112.4776088074.

The spelling of 1376809442 in words is "one billion, three hundred seventy-six million, eight hundred nine thousand, four hundred forty-two".