1378250381 has 8 divisors (see below), whose sum is σ = 1384750080. Its totient is φ = 1371764848.

The previous prime is 1378250369. The next prime is 1378250411. The reversal of 1378250381 is 1830528731.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1378250381 is a prime.

It is a super-2 number, since 2×1378250381² = 3799148225453290322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1378250311) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 224900 + ... + 230946.

It is an arithmetic number, because the mean of its divisors is an integer number (173093760).

Almost surely, 2^1378250381 is an apocalyptic number.

It is an amenable number.

1378250381 is a deficient number, since it is larger than the sum of its proper divisors (6499699).

1378250381 is an equidigital number, since it uses as much as digits as its factorization.

1378250381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7083.

The product of its (nonzero) digits is 40320, while the sum is 38.

The square root of 1378250381 is about 37124.7946930350. The cubic root of 1378250381 is about 1112.8655718334.

The spelling of 1378250381 in words is "one billion, three hundred seventy-eight million, two hundred fifty thousand, three hundred eighty-one".