1353453989 has 2 divisors, whose sum is σ = 1353453990. Its totient is φ = 1353453988.

The previous prime is 1353453977. The next prime is 1353454013. The reversal of 1353453989 is 9893543531.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1168956100 + 184497889 = 34190^2 + 13583^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1353453989 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1353453949) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 676726994 + 676726995.

It is an arithmetic number, because the mean of its divisors is an integer number (676726995).

Almost surely, 2^1353453989 is an apocalyptic number.

It is an amenable number.

1353453989 is a deficient number, since it is larger than the sum of its proper divisors (1).

1353453989 is an equidigital number, since it uses as much as digits as its factorization.

1353453989 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1749600, while the sum is 50.

The square root of 1353453989 is about 36789.3189526525. The cubic root of 1353453989 is about 1106.1512101595.

The spelling of 1353453989 in words is "one billion, three hundred fifty-three million, four hundred fifty-three thousand, nine hundred eighty-nine".