2193901 has 16 divisors (see below), whose sum is σ = 2515968. Its totient is φ = 1900800.

The previous prime is 2193889. The next prime is 2193929. The reversal of 2193901 is 1093912.

It is a cyclic number.

It is not a de Polignac number, because 2193901 - 2¹³ = 2185709 is a prime.

It is a Duffinian number.

2193901 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2193941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12031 + ... + 12211.

It is an arithmetic number, because the mean of its divisors is an integer number (157248).

2^2193901 is an apocalyptic number.

It is an amenable number.

2193901 is a deficient number, since it is larger than the sum of its proper divisors (322067).

2193901 is a wasteful number, since it uses less digits than its factorization.

2193901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 252.

The product of its (nonzero) digits is 486, while the sum is 25.

The square root of 2193901 is about 1481.1822980309. The cubic root of 2193901 is about 129.9388469773.

The spelling of 2193901 in words is "two million, one hundred ninety-three thousand, nine hundred one".