1381431837 has 8 divisors (see below), whose sum is σ = 1843601760. Its totient is φ = 920108240.

The previous prime is 1381431829. The next prime is 1381431847. The reversal of 1381431837 is 7381341831.

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

It is a cyclic number.

It is not a de Polignac number, because 1381431837 - 2³ = 1381431829 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1381431795 and 1381431804.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1381431847) 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, 207762 + ... + 214307.

It is an arithmetic number, because the mean of its divisors is an integer number (230450220).

Almost surely, 2^1381431837 is an apocalyptic number.

It is an amenable number.

1381431837 is a deficient number, since it is larger than the sum of its proper divisors (462169923).

1381431837 is a wasteful number, since it uses less digits than its factorization.

1381431837 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 423163.

The product of its digits is 48384, while the sum is 39.

The square root of 1381431837 is about 37167.6181238454. The cubic root of 1381431837 is about 1113.7212006192.

The spelling of 1381431837 in words is "one billion, three hundred eighty-one million, four hundred thirty-one thousand, eight hundred thirty-seven".