1901441 has 4 divisors (see below), whose sum is σ = 1906500. Its totient is φ = 1896384.

The previous prime is 1901437. The next prime is 1901461. The reversal of 1901441 is 1441091.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1441091 = 347 ⋅4153.

It can be written as a sum of positive squares in 2 ways, for example, as 1809025 + 92416 = 1345^2 + 304^2 .

It is a cyclic number.

It is not a de Polignac number, because 1901441 - 2² = 1901437 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1901461) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1916 + ... + 2733.

It is an arithmetic number, because the mean of its divisors is an integer number (476625).

2^1901441 is an apocalyptic number.

It is an amenable number.

1901441 is a deficient number, since it is larger than the sum of its proper divisors (5059).

1901441 is an equidigital number, since it uses as much as digits as its factorization.

1901441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5058.

The product of its (nonzero) digits is 144, while the sum is 20.

The square root of 1901441 is about 1378.9274817771. The cubic root of 1901441 is about 123.8875367754.

The spelling of 1901441 in words is "one million, nine hundred one thousand, four hundred forty-one".