1393797470464 has 243 divisors, whose sum is σ = 3301838496747. Its totient is φ = 585498074112.

The previous prime is 1393797470459. The next prime is 1393797470539. The reversal of 1393797470464 is 4640747973931.

The square root of 1393797470464 is 1180592.

It is a perfect power (a square), and thus also a powerful number.

It is a Harshad number since it is a multiple of its sum of digits (64).

It is a junction number, because it is equal to n+sod(n) for n = 1393797470396 and 1393797470405.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 10974783169 + ... + 10974783295.

Almost surely, 2^{1393797470464} is an apocalyptic number.

1393797470464 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

1393797470464 is the 1180592-nd square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1393797470464

1393797470464 is an abundant number, since it is smaller than the sum of its proper divisors (1908041026283).

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

1393797470464 is an frugal number, since it uses more digits than its factorization.

1393797470464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 450 (or 219 counting only the distinct ones).

The product of its (nonzero) digits is 96018048, while the sum is 64.

Multiplying 1393797470464 by its sum of digits (64), we get a square (89203038109696 = 9444736²).

1393797470464 divided by its sum of digits (64) gives a square (21778085476 = 147574²).

The spelling of 1393797470464 in words is "one trillion, three hundred ninety-three billion, seven hundred ninety-seven million, four hundred seventy thousand, four hundred sixty-four".