1850981 has 8 divisors (see below), whose sum is σ = 2032128. Its totient is φ = 1672000.

The previous prime is 1850969. The next prime is 1850987. The reversal of 1850981 is 1890581.

It is a happy number.

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

It is not a de Polignac number, because 1850981 - 2¹⁴ = 1834597 is a prime.

It is a super-2 number, since 2×1850981² = 6852261324722, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1850987) 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, 1661 + ... + 2541.

It is an arithmetic number, because the mean of its divisors is an integer number (254016).

2^1850981 is an apocalyptic number.

1850981 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1850981 is a deficient number, since it is larger than the sum of its proper divisors (181147).

1850981 is a wasteful number, since it uses less digits than its factorization.

1850981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1083.

The product of its (nonzero) digits is 2880, while the sum is 32.

The square root of 1850981 is about 1360.5076258515. The cubic root of 1850981 is about 122.7817974626.

The spelling of 1850981 in words is "one million, eight hundred fifty thousand, nine hundred eighty-one".