1001850661 has 8 divisors (see below), whose sum is σ = 1157837760. Its totient is φ = 849079968.

The previous prime is 1001850643. The next prime is 1001850667. The reversal of 1001850661 is 1660581001.

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 1001850661 - 2⁷ = 1001850533 is a prime.

It is a super-2 number, since 2×1001850661² = 2007409493892273842, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1001850667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 803431 + ... + 804676.

It is an arithmetic number, because the mean of its divisors is an integer number (144729720).

Almost surely, 2^1001850661 is an apocalyptic number.

It is an amenable number.

1001850661 is a deficient number, since it is larger than the sum of its proper divisors (155987099).

1001850661 is an equidigital number, since it uses as much as digits as its factorization.

1001850661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1608203.

The product of its (nonzero) digits is 1440, while the sum is 28.

The square root of 1001850661 is about 31652.0245955926. The cubic root of 1001850661 is about 1000.6165068412.

The spelling of 1001850661 in words is "one billion, one million, eight hundred fifty thousand, six hundred sixty-one".