1629345913 has 4 divisors (see below), whose sum is σ = 1754680228. Its totient is φ = 1504011600.

The previous prime is 1629345853. The next prime is 1629345919. The reversal of 1629345913 is 3195439261.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3195439261 = 7 ⋅456491323.

It can be written as a sum of positive squares in 2 ways, for example, as 761925609 + 867420304 = 27603^2 + 29452^2 .

It is not a de Polignac number, because 1629345913 - 2⁹ = 1629345401 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1629345913.

It is not an unprimeable number, because it can be changed into a prime (1629345919) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 62667138 + ... + 62667163.

It is an arithmetic number, because the mean of its divisors is an integer number (438670057).

Almost surely, 2^1629345913 is an apocalyptic number.

1629345913 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1629345913 is a deficient number, since it is larger than the sum of its proper divisors (125334315).

1629345913 is a wasteful number, since it uses less digits than its factorization.

1629345913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125334314.

The product of its digits is 174960, while the sum is 43.

The square root of 1629345913 is about 40365.1571655555. The cubic root of 1629345913 is about 1176.7144823059.

The spelling of 1629345913 in words is "one billion, six hundred twenty-nine million, three hundred forty-five thousand, nine hundred thirteen".