1081383534 has 288 divisors, whose sum is σ = 3178925568. Its totient is φ = 269438400.

The previous prime is 1081383491. The next prime is 1081383577. The reversal of 1081383534 is 4353831801.

1081383534 is a `hidden beast` number, since 10 + 81 + 38 + 3 + 534 = 666.

It is an interprime number because it is at equal distance from previous prime (1081383491) and next prime (1081383577).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 15230719 + ... + 15230789.

It is an arithmetic number, because the mean of its divisors is an integer number (11037936).

Almost surely, 2^1081383534 is an apocalyptic number.

1081383534 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1081383534, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1589462784).

1081383534 is an abundant number, since it is smaller than the sum of its proper divisors (2097542034).

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

1081383534 is a wasteful number, since it uses less digits than its factorization.

1081383534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154 (or 131 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The square root of 1081383534 is about 32884.3965126319. The cubic root of 1081383534 is about 1026.4234939948.

The spelling of 1081383534 in words is "one billion, eighty-one million, three hundred eighty-three thousand, five hundred thirty-four".