1380103921 has 4 divisors (see below), whose sum is σ = 1577261632. Its totient is φ = 1182946212.

The previous prime is 1380103919. The next prime is 1380103957. The reversal of 1380103921 is 1293010831.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 1380103921 - 2¹ = 1380103919 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1380103921.

It is not an unprimeable number, because it can be changed into a prime (1380103981) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 98578845 + ... + 98578858.

It is an arithmetic number, because the mean of its divisors is an integer number (394315408).

Almost surely, 2^1380103921 is an apocalyptic number.

It is an amenable number.

1380103921 is a deficient number, since it is larger than the sum of its proper divisors (197157711).

1380103921 is an equidigital number, since it uses as much as digits as its factorization.

1380103921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 197157710.

The product of its (nonzero) digits is 1296, while the sum is 28.

The square root of 1380103921 is about 37149.7499453226. The cubic root of 1380103921 is about 1113.3642274426.

The spelling of 1380103921 in words is "one billion, three hundred eighty million, one hundred three thousand, nine hundred twenty-one".