1381601380 has 24 divisors (see below), whose sum is σ = 2903685120. Its totient is φ = 552198240.

The previous prime is 1381601369. The next prime is 1381601381. The reversal of 1381601380 is 831061831.

It is not an unprimeable number, because it can be changed into a prime (1381601381) 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, 1426 + ... + 52585.

It is an arithmetic number, because the mean of its divisors is an integer number (120986880).

Almost surely, 2^1381601380 is an apocalyptic number.

1381601380 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1381601380 is an abundant number, since it is smaller than the sum of its proper divisors (1522083740).

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

1381601380 is a wasteful number, since it uses less digits than its factorization.

1381601380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55299 (or 55297 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 31.

The square root of 1381601380 is about 37169.8988430154. The cubic root of 1381601380 is about 1113.7667610550.

The spelling of 1381601380 in words is "one billion, three hundred eighty-one million, six hundred one thousand, three hundred eighty".