1629749061 has 12 divisors (see below), whose sum is σ = 2355968160. Its totient is φ = 1085628840.

The previous prime is 1629749059. The next prime is 1629749083. The reversal of 1629749061 is 1609479261.

1629749061 is a `hidden beast` number, since 16 + 2 + 97 + 490 + 61 = 666.

It is not a de Polignac number, because 1629749061 - 2¹ = 1629749059 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1629748998 and 1629749016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1629749461) 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 11 ways as a sum of consecutive naturals, for example, 60585 + ... + 83246.

It is an arithmetic number, because the mean of its divisors is an integer number (196330680).

Almost surely, 2^1629749061 is an apocalyptic number.

It is an amenable number.

1629749061 is a deficient number, since it is larger than the sum of its proper divisors (726219099).

1629749061 is a wasteful number, since it uses less digits than its factorization.

1629749061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145096 (or 145093 counting only the distinct ones).

The product of its (nonzero) digits is 163296, while the sum is 45.

The square root of 1629749061 is about 40370.1506189908. The cubic root of 1629749061 is about 1176.8115255356.

The spelling of 1629749061 in words is "one billion, six hundred twenty-nine million, seven hundred forty-nine thousand, sixty-one".