1497741647 has 4 divisors (see below), whose sum is σ = 1498878480. Its totient is φ = 1496604816.

The previous prime is 1497741631. The next prime is 1497741683. The reversal of 1497741647 is 7461477941.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7461477941 = 97 ⋅76922453.

It is a cyclic number.

It is not a de Polignac number, because 1497741647 - 2⁴ = 1497741631 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1497741595 and 1497741604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1497741617) 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, 566438 + ... + 569075.

It is an arithmetic number, because the mean of its divisors is an integer number (374719620).

Almost surely, 2^1497741647 is an apocalyptic number.

1497741647 is a deficient number, since it is larger than the sum of its proper divisors (1136833).

1497741647 is a wasteful number, since it uses less digits than its factorization.

1497741647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1136832.

The product of its digits is 1185408, while the sum is 50.

The square root of 1497741647 is about 38700.6672681493. The cubic root of 1497741647 is about 1144.1394720393.

The spelling of 1497741647 in words is "one billion, four hundred ninety-seven million, seven hundred forty-one thousand, six hundred forty-seven".