378251755 has 16 divisors (see below), whose sum is σ = 519358464. Its totient is φ = 259066080.

The previous prime is 378251749. The next prime is 378251759. The reversal of 378251755 is 557152873.

It is a de Polignac number, because none of the positive numbers 2^k-378251755 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (378251759) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25954 + ... + 37816.

It is an arithmetic number, because the mean of its divisors is an integer number (32459904).

Almost surely, 2^378251755 is an apocalyptic number.

378251755 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

378251755 is a deficient number, since it is larger than the sum of its proper divisors (141106709).

378251755 is a wasteful number, since it uses less digits than its factorization.

378251755 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12786.

The product of its digits is 294000, while the sum is 43.

The square root of 378251755 is about 19448.6954575365. The cubic root of 378251755 is about 723.2031635674.

The spelling of 378251755 in words is "three hundred seventy-eight million, two hundred fifty-one thousand, seven hundred fifty-five".