1451729147 has 4 divisors (see below), whose sum is σ = 1583704536. Its totient is φ = 1319753760.

The previous prime is 1451729117. The next prime is 1451729171. The reversal of 1451729147 is 7419271541.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1451729147 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1451729117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 65987678 + ... + 65987699.

It is an arithmetic number, because the mean of its divisors is an integer number (395926134).

Almost surely, 2^1451729147 is an apocalyptic number.

1451729147 is a deficient number, since it is larger than the sum of its proper divisors (131975389).

1451729147 is a wasteful number, since it uses less digits than its factorization.

1451729147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131975388.

The product of its digits is 70560, while the sum is 41.

The square root of 1451729147 is about 38101.5635768403. The cubic root of 1451729147 is about 1132.3009338119.

The spelling of 1451729147 in words is "one billion, four hundred fifty-one million, seven hundred twenty-nine thousand, one hundred forty-seven".