1381401393 has 8 divisors (see below), whose sum is σ = 1881057408. Its totient is φ = 901339824.

The previous prime is 1381401389. The next prime is 1381401407. The reversal of 1381401393 is 3931041831.

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

It is not a de Polignac number, because 1381401393 - 2² = 1381401389 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1381401193) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4898446 + ... + 4898727.

It is an arithmetic number, because the mean of its divisors is an integer number (235132176).

Almost surely, 2^1381401393 is an apocalyptic number.

It is an amenable number.

1381401393 is a deficient number, since it is larger than the sum of its proper divisors (499656015).

1381401393 is an equidigital number, since it uses as much as digits as its factorization.

1381401393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9797223.

The product of its (nonzero) digits is 7776, while the sum is 33.

The square root of 1381401393 is about 37167.2085715352. The cubic root of 1381401393 is about 1113.7130191618.

The spelling of 1381401393 in words is "one billion, three hundred eighty-one million, four hundred one thousand, three hundred ninety-three".