1081936530 has 48 divisors (see below), whose sum is σ = 2816909784. Its totient is φ = 288119040.

The previous prime is 1081936511. The next prime is 1081936567. The reversal of 1081936530 is 356391801.

It is a happy number.

1081936530 is a `hidden beast` number, since 10 + 81 + 9 + 36 + 530 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 620159409 + 461777121 = 24903^2 + 21489^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 60592 + ... + 76388.

Almost surely, 2^1081936530 is an apocalyptic number.

1081936530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1081936530 is an abundant number, since it is smaller than the sum of its proper divisors (1734973254).

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

1081936530 is a wasteful number, since it uses less digits than its factorization.

1081936530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16571 (or 16568 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 36.

The square root of 1081936530 is about 32892.8036202450. The cubic root of 1081936530 is about 1026.5984277231.

The spelling of 1081936530 in words is "one billion, eighty-one million, nine hundred thirty-six thousand, five hundred thirty".