1629727449 has 32 divisors (see below), whose sum is σ = 2506291200. Its totient is φ = 922726272.

The previous prime is 1629727433. The next prime is 1629727483. The reversal of 1629727449 is 9447279261.

It is not a de Polignac number, because 1629727449 - 2⁴ = 1629727433 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1629727499) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1553077 + ... + 1554125.

It is an arithmetic number, because the mean of its divisors is an integer number (78321600).

Almost surely, 2^1629727449 is an apocalyptic number.

It is an amenable number.

1629727449 is a deficient number, since it is larger than the sum of its proper divisors (876563751).

1629727449 is a wasteful number, since it uses less digits than its factorization.

1629727449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1669.

The product of its digits is 1524096, while the sum is 51.

The square root of 1629727449 is about 40369.8829450867. The cubic root of 1629727449 is about 1176.8063236381.

The spelling of 1629727449 in words is "one billion, six hundred twenty-nine million, seven hundred twenty-seven thousand, four hundred forty-nine".