1628134906 has 8 divisors (see below), whose sum is σ = 2447501364. Its totient is φ = 812301120.

The previous prime is 1628134903. The next prime is 1628134927. The reversal of 1628134906 is 6094318261.

It can be written as a sum of positive squares in 2 ways, for example, as 1623687025 + 4447881 = 40295^2 + 2109^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (1628134903) 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 3 ways as a sum of consecutive naturals, for example, 882015 + ... + 883858.

Almost surely, 2^1628134906 is an apocalyptic number.

1628134906 is a deficient number, since it is larger than the sum of its proper divisors (819366458).

1628134906 is a wasteful number, since it uses less digits than its factorization.

1628134906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1766336.

The product of its (nonzero) digits is 62208, while the sum is 40.

The square root of 1628134906 is about 40350.1537295708. The cubic root of 1628134906 is about 1176.4228800839.

The spelling of 1628134906 in words is "one billion, six hundred twenty-eight million, one hundred thirty-four thousand, nine hundred six".