1378253355 has 16 divisors (see below), whose sum is σ = 2233121280. Its totient is φ = 725763168.

The previous prime is 1378253351. The next prime is 1378253363. The reversal of 1378253355 is 5533528731.

It is not a de Polignac number, because 1378253355 - 2² = 1378253351 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1378253351) 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, 580357 + ... + 582726.

It is an arithmetic number, because the mean of its divisors is an integer number (139570080).

Almost surely, 2^1378253355 is an apocalyptic number.

1378253355 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1378253355 is a deficient number, since it is larger than the sum of its proper divisors (854867925).

1378253355 is a wasteful number, since it uses less digits than its factorization.

1378253355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1163170.

The product of its digits is 378000, while the sum is 42.

The square root of 1378253355 is about 37124.8347471070. The cubic root of 1378253355 is about 1112.8663722830.

The spelling of 1378253355 in words is "one billion, three hundred seventy-eight million, two hundred fifty-three thousand, three hundred fifty-five".