1381054320 has 160 divisors (see below), whose sum is σ = 4963968000. Its totient is φ = 352256256.

The previous prime is 1381054277. The next prime is 1381054331. The reversal of 1381054320 is 234501831.

It is a happy number.

It is a super-2 number, since 2×1381054320² = 3814622069581324800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 35781 + ... + 63579.

It is an arithmetic number, because the mean of its divisors is an integer number (31024800).

Almost surely, 2^1381054320 is an apocalyptic number.

1381054320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1381054320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2481984000).

1381054320 is an abundant number, since it is smaller than the sum of its proper divisors (3582913680).

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

1381054320 is a wasteful number, since it uses less digits than its factorization.

1381054320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27844 (or 27832 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 1381054320 is about 37162.5392028048. The cubic root of 1381054320 is about 1113.6197389857.

The spelling of 1381054320 in words is "one billion, three hundred eighty-one million, fifty-four thousand, three hundred twenty".