1851942 has 16 divisors (see below), whose sum is σ = 3721392. Its totient is φ = 614400.

The previous prime is 1851931. The next prime is 1851953. The reversal of 1851942 is 2491581.

It is a happy number.

1851942 is nontrivially palindromic in base 9.

1851942 is an esthetic number in base 9, because in such base its adjacent digits differ by 1.

It is an interprime number because it is at equal distance from previous prime (1851931) and next prime (1851953).

It is a plaindrome in base 15.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 942 + ... + 2142.

It is an arithmetic number, because the mean of its divisors is an integer number (232587).

2^1851942 is an apocalyptic number.

1851942 is an abundant number, since it is smaller than the sum of its proper divisors (1869450).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1851942 is a wasteful number, since it uses less digits than its factorization.

1851942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1463.

The product of its digits is 2880, while the sum is 30.

The square root of 1851942 is about 1360.8607570211. The cubic root of 1851942 is about 122.8030425741.

The spelling of 1851942 in words is "one million, eight hundred fifty-one thousand, nine hundred forty-two".