1953143 has 4 divisors (see below), whose sum is σ = 2055960. Its totient is φ = 1850328.

The previous prime is 1953109. The next prime is 1953151. The reversal of 1953143 is 3413591.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1953143 - 2⁸ = 1952887 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1953163) 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, 51380 + ... + 51417.

It is an arithmetic number, because the mean of its divisors is an integer number (513990).

2^1953143 is an apocalyptic number.

1953143 is a deficient number, since it is larger than the sum of its proper divisors (102817).

1953143 is a wasteful number, since it uses less digits than its factorization.

1953143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102816.

The product of its digits is 1620, while the sum is 26.

The square root of 1953143 is about 1397.5489257983. The cubic root of 1953143 is about 125.0003839988. Note that the first 3 decimals are identical.

The spelling of 1953143 in words is "one million, nine hundred fifty-three thousand, one hundred forty-three".