378925155 has 128 divisors (see below), whose sum is σ = 826675200. Its totient is φ = 160745472.

The previous prime is 378925153. The next prime is 378925163. The reversal of 378925155 is 551529873.

It is a Cunningham number, because it is equal to 19466²-1.

It is not a de Polignac number, because 378925155 - 2¹ = 378925153 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 378925155.

It is not an unprimeable number, because it can be changed into a prime (378925153) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 1654581 + ... + 1654809.

It is an arithmetic number, because the mean of its divisors is an integer number (6458400).

Almost surely, 2^378925155 is an apocalyptic number.

378925155 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

378925155 is an abundant number, since it is smaller than the sum of its proper divisors (447750045).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

378925155 is a wasteful number, since it uses less digits than its factorization.

378925155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 370 (or 364 counting only the distinct ones).

The product of its digits is 378000, while the sum is 45.

The square root of 378925155 is about 19465.9999743142. Note that the first 4 decimals coincide. The cubic root of 378925155 is about 723.6320809794.

The spelling of 378925155 in words is "three hundred seventy-eight million, nine hundred twenty-five thousand, one hundred fifty-five".