1451472689 has 2 divisors, whose sum is σ = 1451472690. Its totient is φ = 1451472688.

The previous prime is 1451472653. The next prime is 1451472691. The reversal of 1451472689 is 9862741541.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1341390625 + 110082064 = 36625^2 + 10492^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1451472689 is a prime.

It is a Sophie Germain prime.

Together with 1451472691, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (1451472089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 725736344 + 725736345.

It is an arithmetic number, because the mean of its divisors is an integer number (725736345).

Almost surely, 2^1451472689 is an apocalyptic number.

It is an amenable number.

1451472689 is a deficient number, since it is larger than the sum of its proper divisors (1).

1451472689 is an equidigital number, since it uses as much as digits as its factorization.

1451472689 is an evil number, because the sum of its binary digits is even.

The product of its digits is 483840, while the sum is 47.

The square root of 1451472689 is about 38098.1979757573. The cubic root of 1451472689 is about 1132.2342536201.

The spelling of 1451472689 in words is "one billion, four hundred fifty-one million, four hundred seventy-two thousand, six hundred eighty-nine".