1378009255 has 16 divisors (see below), whose sum is σ = 1896827904. Its totient is φ = 941427360.

The previous prime is 1378009229. The next prime is 1378009267. The reversal of 1378009255 is 5529008731.

It is not a de Polignac number, because 1378009255 - 2⁵ = 1378009223 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 63157 + ... + 82126.

It is an arithmetic number, because the mean of its divisors is an integer number (118551744).

Almost surely, 2^1378009255 is an apocalyptic number.

1378009255 is a deficient number, since it is larger than the sum of its proper divisors (518818649).

1378009255 is a wasteful number, since it uses less digits than its factorization.

1378009255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145566.

The product of its (nonzero) digits is 75600, while the sum is 40.

The square root of 1378009255 is about 37121.5470448094. The cubic root of 1378009255 is about 1112.8006691428.

The spelling of 1378009255 in words is "one billion, three hundred seventy-eight million, nine thousand, two hundred fifty-five".