245386378 has 4 divisors (see below), whose sum is σ = 368079570. Its totient is φ = 122693188.

The previous prime is 245386363. The next prime is 245386391. The reversal of 245386378 is 873683542.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 241398369 + 3988009 = 15537^2 + 1997^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61346593 + ... + 61346596.

Almost surely, 2^245386378 is an apocalyptic number.

245386378 is a deficient number, since it is larger than the sum of its proper divisors (122693192).

245386378 is a wasteful number, since it uses less digits than its factorization.

245386378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122693191.

The product of its digits is 967680, while the sum is 46.

The square root of 245386378 is about 15664.8133726515. The cubic root of 245386378 is about 626.0612395730.

It can be divided in two parts, 2453 and 86378, that added together give a triangular number (88831 = T₄₂₁).

The spelling of 245386378 in words is "two hundred forty-five million, three hundred eighty-six thousand, three hundred seventy-eight".