1238187378 has 16 divisors (see below), whose sum is σ = 2523099456. Its totient is φ = 404941680.

The previous prime is 1238187373. The next prime is 1238187409. The reversal of 1238187378 is 8737818321.

It is not an unprimeable number, because it can be changed into a prime (1238187373) 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 7 ways as a sum of consecutive naturals, for example, 1946518 + ... + 1947153.

It is an arithmetic number, because the mean of its divisors is an integer number (157693716).

Almost surely, 2^1238187378 is an apocalyptic number.

1238187378 is an abundant number, since it is smaller than the sum of its proper divisors (1284912078).

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

1238187378 is a wasteful number, since it uses less digits than its factorization.

1238187378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3893729.

The product of its digits is 451584, while the sum is 48.

The square root of 1238187378 is about 35187.8868078207. The cubic root of 1238187378 is about 1073.8133299504.

The spelling of 1238187378 in words is "one billion, two hundred thirty-eight million, one hundred eighty-seven thousand, three hundred seventy-eight".