1016661023 has 8 divisors (see below), whose sum is σ = 1164828192. Its totient is φ = 869226336.

The previous prime is 1016660989. The next prime is 1016661043. The reversal of 1016661023 is 3201666101.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1016661023 - 2⁶ = 1016660959 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1016660983 and 1016661001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1016661043) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 180140 + ... + 185697.

It is an arithmetic number, because the mean of its divisors is an integer number (145603524).

Almost surely, 2^1016661023 is an apocalyptic number.

1016661023 is a deficient number, since it is larger than the sum of its proper divisors (148167169).

1016661023 is an equidigital number, since it uses as much as digits as its factorization.

1016661023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 366241.

The product of its (nonzero) digits is 1296, while the sum is 26.

The square root of 1016661023 is about 31885.1222829708. The cubic root of 1016661023 is about 1005.5231133913.

The spelling of 1016661023 in words is "one billion, sixteen million, six hundred sixty-one thousand, twenty-three".