1393734005320 has 32 divisors (see below), whose sum is σ = 3136014513720. Its totient is φ = 557473512960.

The previous prime is 1393734005309. The next prime is 1393734005333. The reversal of 1393734005320 is 235004373931.

It can be written as a sum of positive squares in 4 ways, for example, as 1344203722404 + 49530282916 = 1159398^2 + 222554^2 .

It is a Harshad number since it is a multiple of its sum of digits (40).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 522130 + ... + 1749310.

Almost surely, 2^{1393734005320} is an apocalyptic number.

1393734005320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1393734005320 is an abundant number, since it is smaller than the sum of its proper divisors (1742280508400).

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

1393734005320 is a wasteful number, since it uses less digits than its factorization.

1393734005320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1255585 (or 1255581 counting only the distinct ones).

The product of its (nonzero) digits is 204120, while the sum is 40.

The spelling of 1393734005320 in words is "one trillion, three hundred ninety-three billion, seven hundred thirty-four million, five thousand, three hundred twenty".