143978453 has 2 divisors, whose sum is σ = 143978454. Its totient is φ = 143978452.

The previous prime is 143978407. The next prime is 143978473. The reversal of 143978453 is 354879341.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 141538609 + 2439844 = 11897^2 + 1562^2 .

It is a cyclic number.

It is not a de Polignac number, because 143978453 - 2¹⁰ = 143977429 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (143978473) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71989226 + 71989227.

It is an arithmetic number, because the mean of its divisors is an integer number (71989227).

Almost surely, 2^143978453 is an apocalyptic number.

It is an amenable number.

143978453 is a deficient number, since it is larger than the sum of its proper divisors (1).

143978453 is an equidigital number, since it uses as much as digits as its factorization.

143978453 is an evil number, because the sum of its binary digits is even.

The product of its digits is 362880, while the sum is 44.

The square root of 143978453 is about 11999.1021747462. The cubic root of 143978453 is about 524.1221344290.

The spelling of 143978453 in words is "one hundred forty-three million, nine hundred seventy-eight thousand, four hundred fifty-three".