1393194012500 has 72 divisors (see below), whose sum is σ = 3048071723424. Its totient is φ = 557157860000.

The previous prime is 1393194012499. The next prime is 1393194012503. The reversal of 1393194012500 is 52104913931.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1393194012503) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 79028687 + ... + 79046313.

It is an arithmetic number, because the mean of its divisors is an integer number (42334329492).

Almost surely, 2^{1393194012500} is an apocalyptic number.

1393194012500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1393194012500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1524035861712).

1393194012500 is an abundant number, since it is smaller than the sum of its proper divisors (1654877710924).

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

1393194012500 is an equidigital number, since it uses as much as digits as its factorization.

1393194012500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23979 (or 23957 counting only the distinct ones).

The product of its (nonzero) digits is 29160, while the sum is 38.

The spelling of 1393194012500 in words is "one trillion, three hundred ninety-three billion, one hundred ninety-four million, twelve thousand, five hundred".