1048658561 has 16 divisors (see below), whose sum is σ = 1078909440. Its totient is φ = 1018967040.

The previous prime is 1048658539. The next prime is 1048658579. The reversal of 1048658561 is 1658568401.

It is a cyclic number.

It is not a de Polignac number, because 1048658561 - 2⁶ = 1048658497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1048658461) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 2153060 + ... + 2153546.

It is an arithmetic number, because the mean of its divisors is an integer number (67431840).

Almost surely, 2^1048658561 is an apocalyptic number.

It is an amenable number.

1048658561 is a deficient number, since it is larger than the sum of its proper divisors (30250879).

1048658561 is an equidigital number, since it uses as much as digits as its factorization.

1048658561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 944.

The product of its (nonzero) digits is 230400, while the sum is 44.

The square root of 1048658561 is about 32382.9980236543. The cubic root of 1048658561 is about 1015.9633362599.

The spelling of 1048658561 in words is "one billion, forty-eight million, six hundred fifty-eight thousand, five hundred sixty-one".