1968420453 has 8 divisors (see below), whose sum is σ = 2625331488. Its totient is φ = 1311894864.

The previous prime is 1968420449. The next prime is 1968420511. The reversal of 1968420453 is 3540248691.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1968420453 - 2² = 1968420449 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1968427453) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 84226 + ... + 105027.

It is an arithmetic number, because the mean of its divisors is an integer number (328166436).

Almost surely, 2^1968420453 is an apocalyptic number.

It is an amenable number.

1968420453 is a deficient number, since it is larger than the sum of its proper divisors (656911035).

1968420453 is a wasteful number, since it uses less digits than its factorization.

1968420453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 192723.

The product of its (nonzero) digits is 207360, while the sum is 42.

The square root of 1968420453 is about 44366.8846438422. The cubic root of 1968420453 is about 1253.2545489481.

The spelling of 1968420453 in words is "one billion, nine hundred sixty-eight million, four hundred twenty thousand, four hundred fifty-three".