1953641 has 4 divisors (see below), whose sum is σ = 1969152. Its totient is φ = 1938132.

The previous prime is 1953629. The next prime is 1953659. The reversal of 1953641 is 1463591.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1953641 - 2⁶ = 1953577 is a prime.

It is a d-powerful number, because it can be written as 1 + 9 + 5⁹ + 3⁵ + 6 + 4⁴ + 1 .

It is a Duffinian number.

It is a Curzon number.

It is a plaindrome in base 11.

It is not an unprimeable number, because it can be changed into a prime (1953041) 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, 7565 + ... + 7818.

It is an arithmetic number, because the mean of its divisors is an integer number (492288).

2^1953641 is an apocalyptic number.

It is an amenable number.

1953641 is a deficient number, since it is larger than the sum of its proper divisors (15511).

1953641 is a wasteful number, since it uses less digits than its factorization.

1953641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15510.

The product of its digits is 3240, while the sum is 29.

The square root of 1953641 is about 1397.7270835181. The cubic root of 1953641 is about 125.0110070307.

The spelling of 1953641 in words is "one million, nine hundred fifty-three thousand, six hundred forty-one".