1081749554 has 16 divisors (see below), whose sum is σ = 1630867392. Its totient is φ = 538133808.

The previous prime is 1081749533. The next prime is 1081749583. The reversal of 1081749554 is 4559471801.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 481157 + ... + 483399.

It is an arithmetic number, because the mean of its divisors is an integer number (101929212).

Almost surely, 2^1081749554 is an apocalyptic number.

1081749554 is a deficient number, since it is larger than the sum of its proper divisors (549117838).

1081749554 is a wasteful number, since it uses less digits than its factorization.

1081749554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3361.

The product of its (nonzero) digits is 201600, while the sum is 44.

The square root of 1081749554 is about 32889.9612952037. The cubic root of 1081749554 is about 1026.5392867536.

The spelling of 1081749554 in words is "one billion, eighty-one million, seven hundred forty-nine thousand, five hundred fifty-four".