1842180957 has 12 divisors (see below), whose sum is σ = 2661347260. Its totient is φ = 1227927168.

The previous prime is 1842180953. The next prime is 1842180961. The reversal of 1842180957 is 7590812481.

It is an interprime number because it is at equal distance from previous prime (1842180953) and next prime (1842180961).

It can be written as a sum of positive squares in 2 ways, for example, as 669049956 + 1173131001 = 25866^2 + 34251^2 .

It is not a de Polignac number, because 1842180957 - 2² = 1842180953 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 (1842180953) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 66423 + ... + 89979.

Almost surely, 2^1842180957 is an apocalyptic number.

It is an amenable number.

1842180957 is a deficient number, since it is larger than the sum of its proper divisors (819166303).

1842180957 is a wasteful number, since it uses less digits than its factorization.

1842180957 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32252 (or 32249 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 45.

The square root of 1842180957 is about 42920.6355614639. The cubic root of 1842180957 is about 1225.8690946599.

The spelling of 1842180957 in words is "one billion, eight hundred forty-two million, one hundred eighty thousand, nine hundred fifty-seven".