64189453 has 2 divisors, whose sum is σ = 64189454. Its totient is φ = 64189452.

The previous prime is 64189427. The next prime is 64189457. The reversal of 64189453 is 35498146.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 55026724 + 9162729 = 7418^2 + 3027^2 .

It is a cyclic number.

It is not a de Polignac number, because 64189453 - 2⁵ = 64189421 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64189457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32094726 + 32094727.

It is an arithmetic number, because the mean of its divisors is an integer number (32094727).

Almost surely, 2^64189453 is an apocalyptic number.

It is an amenable number.

64189453 is a deficient number, since it is larger than the sum of its proper divisors (1).

64189453 is an equidigital number, since it uses as much as digits as its factorization.

64189453 is an evil number, because the sum of its binary digits is even.

The product of its digits is 103680, while the sum is 40.

The square root of 64189453 is about 8011.8320626434. The cubic root of 64189453 is about 400.3943049313.

The spelling of 64189453 in words is "sixty-four million, one hundred eighty-nine thousand, four hundred fifty-three".