1381054444 has 48 divisors (see below), whose sum is σ = 3171813120. Its totient is φ = 509751360.

The previous prime is 1381054427. The next prime is 1381054447. The reversal of 1381054444 is 4444501831.

It is a super-2 number, since 2×1381054444² = 3814622754584298272, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1381054447) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 112147 + ... + 123850.

It is an arithmetic number, because the mean of its divisors is an integer number (66079440).

Almost surely, 2^1381054444 is an apocalyptic number.

1381054444 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1381054444 is an abundant number, since it is smaller than the sum of its proper divisors (1790758676).

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

1381054444 is a wasteful number, since it uses less digits than its factorization.

1381054444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 236038 (or 236036 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 34.

The square root of 1381054444 is about 37162.5408711514. The cubic root of 1381054444 is about 1113.6197723151.

The spelling of 1381054444 in words is "one billion, three hundred eighty-one million, fifty-four thousand, four hundred forty-four".