1953493 has 2 divisors, whose sum is σ = 1953494. Its totient is φ = 1953492.

The previous prime is 1953491. The next prime is 1953503. The reversal of 1953493 is 3943591.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1912689 + 40804 = 1383^2 + 202^2 .

It is an emirp because it is prime and its reverse (3943591) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1953493 - 2¹ = 1953491 is a prime.

It is a super-2 number, since 2×1953493² = 7632269802098, which contains 22 as substring.

Together with 1953491, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1953491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 976746 + 976747.

It is an arithmetic number, because the mean of its divisors is an integer number (976747).

2^1953493 is an apocalyptic number.

It is an amenable number.

1953493 is a deficient number, since it is larger than the sum of its proper divisors (1).

1953493 is an equidigital number, since it uses as much as digits as its factorization.

1953493 is an evil number, because the sum of its binary digits is even.

The product of its digits is 14580, while the sum is 34.

The square root of 1953493 is about 1397.6741394188. The cubic root of 1953493 is about 125.0078501737.

The spelling of 1953493 in words is "one million, nine hundred fifty-three thousand, four hundred ninety-three".