1863161 has 8 divisors (see below), whose sum is σ = 1978560. Its totient is φ = 1750672.

The previous prime is 1863157. The next prime is 1863181. The reversal of 1863161 is 1613681.

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

It is a cyclic number.

It is not a de Polignac number, because 1863161 - 2² = 1863157 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1863161.

It is not an unprimeable number, because it can be changed into a prime (1863151) 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, 671 + ... + 2043.

It is an arithmetic number, because the mean of its divisors is an integer number (247320).

2^1863161 is an apocalyptic number.

It is an amenable number.

1863161 is a deficient number, since it is larger than the sum of its proper divisors (115399).

1863161 is a wasteful number, since it uses less digits than its factorization.

1863161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1455.

The product of its digits is 864, while the sum is 26.

The square root of 1863161 is about 1364.9765565752. The cubic root of 1863161 is about 123.0505223521.

The spelling of 1863161 in words is "one million, eight hundred sixty-three thousand, one hundred sixty-one".