1381978596 has 12 divisors (see below), whose sum is σ = 3224616752. Its totient is φ = 460659528.

The previous prime is 1381978583. The next prime is 1381978597. The reversal of 1381978596 is 6958791831.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (1381978597) 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, 57582430 + ... + 57582453.

Almost surely, 2^1381978596 is an apocalyptic number.

It is an amenable number.

1381978596 is an abundant number, since it is smaller than the sum of its proper divisors (1842638156).

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

1381978596 is a wasteful number, since it uses less digits than its factorization.

1381978596 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115164890 (or 115164888 counting only the distinct ones).

The product of its digits is 3265920, while the sum is 57.

The square root of 1381978596 is about 37174.9727101447. The cubic root of 1381978596 is about 1113.8681150390.

The spelling of 1381978596 in words is "one billion, three hundred eighty-one million, nine hundred seventy-eight thousand, five hundred ninety-six".