1953459043 has 4 divisors (see below), whose sum is σ = 1953568800. Its totient is φ = 1953349288.

The previous prime is 1953459037. The next prime is 1953459047. The reversal of 1953459043 is 3409543591.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 3409543591 = 997 ⋅3419803.

It is a cyclic number.

It is not a de Polignac number, because 1953459043 - 2²¹ = 1951361891 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1953459047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21355 + ... + 66052.

It is an arithmetic number, because the mean of its divisors is an integer number (488392200).

Almost surely, 2^1953459043 is an apocalyptic number.

1953459043 is a deficient number, since it is larger than the sum of its proper divisors (109757).

1953459043 is an equidigital number, since it uses as much as digits as its factorization.

1953459043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109756.

The product of its (nonzero) digits is 291600, while the sum is 43.

The square root of 1953459043 is about 44197.9529277092. The cubic root of 1953459043 is about 1250.0712584444.

The spelling of 1953459043 in words is "one billion, nine hundred fifty-three million, four hundred fifty-nine thousand, forty-three".