1850160661 has 4 divisors (see below), whose sum is σ = 1852512352. Its totient is φ = 1847808972.

The previous prime is 1850160649. The next prime is 1850160707. The reversal of 1850160661 is 1660610581.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1660610581 = 7 ⋅237230083.

It is a cyclic number.

It is not a de Polignac number, because 1850160661 - 2¹⁵ = 1850127893 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 (1850160061) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1174665 + ... + 1176238.

It is an arithmetic number, because the mean of its divisors is an integer number (463128088).

Almost surely, 2^1850160661 is an apocalyptic number.

It is an amenable number.

1850160661 is a deficient number, since it is larger than the sum of its proper divisors (2351691).

1850160661 is an equidigital number, since it uses as much as digits as its factorization.

1850160661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2351690.

The product of its (nonzero) digits is 8640, while the sum is 34.

The square root of 1850160661 is about 43013.4939408554. The cubic root of 1850160661 is about 1227.6365616695.

The spelling of 1850160661 in words is "one billion, eight hundred fifty million, one hundred sixty thousand, six hundred sixty-one".