1802155 has 16 divisors (see below), whose sum is σ = 2268000. Its totient is φ = 1373440.

The previous prime is 1802149. The next prime is 1802189. The reversal of 1802155 is 5512081.

It is not a de Polignac number, because 1802155 - 2¹³ = 1793963 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12021 + ... + 12169.

It is an arithmetic number, because the mean of its divisors is an integer number (141750).

2^1802155 is an apocalyptic number.

1802155 is a deficient number, since it is larger than the sum of its proper divisors (465845).

1802155 is a wasteful number, since it uses less digits than its factorization.

1802155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 254.

The product of its (nonzero) digits is 400, while the sum is 22.

The square root of 1802155 is about 1342.4436673470. The cubic root of 1802155 is about 121.6925655339.

The spelling of 1802155 in words is "one million, eight hundred two thousand, one hundred fifty-five".