1393361984 has 56 divisors (see below), whose sum is σ = 3245388480. Its totient is φ = 581008896.

The previous prime is 1393361951. The next prime is 1393361987. The reversal of 1393361984 is 4891633931.

It is a tau number, because it is divible by the number of its divisors (56).

It is not an unprimeable number, because it can be changed into a prime (1393361987) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25454 + ... + 58605.

Almost surely, 2^1393361984 is an apocalyptic number.

1393361984 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1393361984 is an abundant number, since it is smaller than the sum of its proper divisors (1852026496).

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

1393361984 is an equidigital number, since it uses as much as digits as its factorization.

1393361984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84115 (or 84105 counting only the distinct ones).

The product of its digits is 419904, while the sum is 47.

The square root of 1393361984 is about 37327.7642512916. The cubic root of 1393361984 is about 1116.9180748059.

The spelling of 1393361984 in words is "one billion, three hundred ninety-three million, three hundred sixty-one thousand, nine hundred eighty-four".