1850641 has 4 divisors (see below), whose sum is σ = 1993012. Its totient is φ = 1708272.

The previous prime is 1850633. The next prime is 1850687. The reversal of 1850641 is 1460581.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1460581 = 43 ⋅33967.

It can be written as a sum of positive squares in 2 ways, for example, as 108241 + 1742400 = 329^2 + 1320^2 .

It is a cyclic number.

It is not a de Polignac number, because 1850641 - 2³ = 1850633 is a prime.

It is a super-2 number, since 2×1850641² = 6849744221762, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1850041) 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, 71166 + ... + 71191.

It is an arithmetic number, because the mean of its divisors is an integer number (498253).

2^1850641 is an apocalyptic number.

It is an amenable number.

1850641 is a deficient number, since it is larger than the sum of its proper divisors (142371).

1850641 is a wasteful number, since it uses less digits than its factorization.

1850641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142370.

The product of its (nonzero) digits is 960, while the sum is 25.

The square root of 1850641 is about 1360.3826667523. The cubic root of 1850641 is about 122.7742792209.

The spelling of 1850641 in words is "one million, eight hundred fifty thousand, six hundred forty-one".