1661051110 has 8 divisors (see below), whose sum is σ = 2989892016. Its totient is φ = 664420440.

The previous prime is 1661051107. The next prime is 1661051137. The reversal of 1661051110 is 111501661.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 83052546 + ... + 83052565.

It is an arithmetic number, because the mean of its divisors is an integer number (373736502).

Almost surely, 2^1661051110 is an apocalyptic number.

1661051110 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1661051110 is a deficient number, since it is larger than the sum of its proper divisors (1328840906).

1661051110 is a wasteful number, since it uses less digits than its factorization.

1661051110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166105118.

The product of its (nonzero) digits is 180, while the sum is 22.

The square root of 1661051110 is about 40755.9947737753. The cubic root of 1661051110 is about 1184.2980074335.

Adding to 1661051110 its reverse (111501661), we get a palindrome (1772552771).

The spelling of 1661051110 in words is "one billion, six hundred sixty-one million, fifty-one thousand, one hundred ten".