1378065137 has 8 divisors (see below), whose sum is σ = 1404673704. Its totient is φ = 1351479168.

The previous prime is 1378065131. The next prime is 1378065149. The reversal of 1378065137 is 7315608731.

It can be written as a sum of positive squares in 4 ways, for example, as 468982336 + 909082801 = 21656^2 + 30151^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1378065137 - 2⁴ = 1378065121 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1378065094 and 1378065103.

It is not an unprimeable number, because it can be changed into a prime (1378065131) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 168413 + ... + 176405.

It is an arithmetic number, because the mean of its divisors is an integer number (175584213).

Almost surely, 2^1378065137 is an apocalyptic number.

It is an amenable number.

1378065137 is a deficient number, since it is larger than the sum of its proper divisors (26608567).

1378065137 is an equidigital number, since it uses as much as digits as its factorization.

1378065137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11299.

The product of its (nonzero) digits is 105840, while the sum is 41.

The square root of 1378065137 is about 37122.2997267141. The cubic root of 1378065137 is about 1112.8157112978.

The spelling of 1378065137 in words is "one billion, three hundred seventy-eight million, sixty-five thousand, one hundred thirty-seven".