1146661021 has 16 divisors (see below), whose sum is σ = 1333075968. Its totient is φ = 975871600.

The previous prime is 1146661003. The next prime is 1146661027. The reversal of 1146661021 is 1201666411.

It is not a de Polignac number, because 1146661021 - 2⁹ = 1146660509 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1146661027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36325 + ... + 60106.

It is an arithmetic number, because the mean of its divisors is an integer number (83317248).

Almost surely, 2^1146661021 is an apocalyptic number.

1146661021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1146661021 is a deficient number, since it is larger than the sum of its proper divisors (186414947).

1146661021 is a wasteful number, since it uses less digits than its factorization.

1146661021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96512.

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 1146661021 is about 33862.3835693827. The cubic root of 1146661021 is about 1046.6745953371.

The spelling of 1146661021 in words is "one billion, one hundred forty-six million, six hundred sixty-one thousand, twenty-one".