1629549745 has 16 divisors (see below), whose sum is σ = 2010927168. Its totient is φ = 1266753600.

The previous prime is 1629549743. The next prime is 1629549749. The reversal of 1629549745 is 5479459261.

It is not a de Polignac number, because 1629549745 - 2¹ = 1629549743 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1629549692 and 1629549701.

It is not an unprimeable number, because it can be changed into a prime (1629549743) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 147670 + ... + 158320.

It is an arithmetic number, because the mean of its divisors is an integer number (125682948).

Almost surely, 2^1629549745 is an apocalyptic number.

It is an amenable number.

1629549745 is a deficient number, since it is larger than the sum of its proper divisors (381377423).

1629549745 is a wasteful number, since it uses less digits than its factorization.

1629549745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11520.

The product of its digits is 2721600, while the sum is 52.

The square root of 1629549745 is about 40367.6819374113. The cubic root of 1629549745 is about 1176.7635494526.

The spelling of 1629549745 in words is "one billion, six hundred twenty-nine million, five hundred forty-nine thousand, seven hundred forty-five".