1081849433 has 4 divisors (see below), whose sum is σ = 1236399360. Its totient is φ = 927299508.

The previous prime is 1081849397. The next prime is 1081849471. The reversal of 1081849433 is 3349481801.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1081849433 - 2⁶ = 1081849369 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1081845433) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 77274953 + ... + 77274966.

It is an arithmetic number, because the mean of its divisors is an integer number (309099840).

Almost surely, 2^1081849433 is an apocalyptic number.

It is an amenable number.

1081849433 is a deficient number, since it is larger than the sum of its proper divisors (154549927).

1081849433 is an equidigital number, since it uses as much as digits as its factorization.

1081849433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154549926.

The product of its (nonzero) digits is 82944, while the sum is 41.

The square root of 1081849433 is about 32891.4796413904. The cubic root of 1081849433 is about 1026.5708795752.

The spelling of 1081849433 in words is "one billion, eighty-one million, eight hundred forty-nine thousand, four hundred thirty-three".