1378415085 has 16 divisors (see below), whose sum is σ = 2211231744. Its totient is φ = 733232192.

The previous prime is 1378415081. The next prime is 1378415099. The reversal of 1378415085 is 5805148731.

1378415085 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 1378415085 - 2² = 1378415081 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1378415081) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 114222 + ... + 125711.

It is an arithmetic number, because the mean of its divisors is an integer number (138201984).

Almost surely, 2^1378415085 is an apocalyptic number.

1378415085 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1378415085 is a deficient number, since it is larger than the sum of its proper divisors (832816659).

1378415085 is a wasteful number, since it uses less digits than its factorization.

1378415085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 240324.

The product of its (nonzero) digits is 134400, while the sum is 42.

The square root of 1378415085 is about 37127.0128747251. The cubic root of 1378415085 is about 1112.9099000418.

The spelling of 1378415085 in words is "one billion, three hundred seventy-eight million, four hundred fifteen thousand, eighty-five".