1081643396 has 6 divisors (see below), whose sum is σ = 1892875950. Its totient is φ = 540821696.

The previous prime is 1081643347. The next prime is 1081643417. The reversal of 1081643396 is 6933461801.

It can be written as a sum of positive squares in only one way, i.e., 974313796 + 107329600 = 31214^2 + 10360^2 .

It is a super-2 number, since 2×1081643396² = 2339904872220825632, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 135205421 + ... + 135205428.

It is an arithmetic number, because the mean of its divisors is an integer number (315479325).

Almost surely, 2^1081643396 is an apocalyptic number.

It is an amenable number.

1081643396 is a deficient number, since it is larger than the sum of its proper divisors (811232554).

1081643396 is a wasteful number, since it uses less digits than its factorization.

1081643396 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 270410853 (or 270410851 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 41.

The square root of 1081643396 is about 32888.3474197169. The cubic root of 1081643396 is about 1026.5057056835.

The spelling of 1081643396 in words is "one billion, eighty-one million, six hundred forty-three thousand, three hundred ninety-six".