1471739749 has 2 divisors, whose sum is σ = 1471739750. Its totient is φ = 1471739748.

The previous prime is 1471739747. The next prime is 1471739767. The reversal of 1471739749 is 9479371741.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 863772100 + 607967649 = 29390^2 + 24657^2 .

It is a cyclic number.

It is not a de Polignac number, because 1471739749 - 2¹ = 1471739747 is a prime.

Together with 1471739747, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 1471739696 and 1471739705.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1471739747) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 735869874 + 735869875.

It is an arithmetic number, because the mean of its divisors is an integer number (735869875).

Almost surely, 2^1471739749 is an apocalyptic number.

It is an amenable number.

1471739749 is a deficient number, since it is larger than the sum of its proper divisors (1).

1471739749 is an equidigital number, since it uses as much as digits as its factorization.

1471739749 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1333584, while the sum is 52.

The square root of 1471739749 is about 38363.2604062793. The cubic root of 1471739749 is about 1137.4797482044.

The spelling of 1471739749 in words is "one billion, four hundred seventy-one million, seven hundred thirty-nine thousand, seven hundred forty-nine".