1628813469 has 32 divisors (see below), whose sum is σ = 2376152064. Its totient is φ = 988404480.

The previous prime is 1628813447. The next prime is 1628813509. The reversal of 1628813469 is 9643188261.

It is not a de Polignac number, because 1628813469 - 2⁸ = 1628813213 is a prime.

It is a super-2 number, since 2×1628813469² = 5306066633591627922, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1628813419) 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, 222274 + ... + 229484.

It is an arithmetic number, because the mean of its divisors is an integer number (74254752).

Almost surely, 2^1628813469 is an apocalyptic number.

It is an amenable number.

1628813469 is a deficient number, since it is larger than the sum of its proper divisors (747338595).

1628813469 is a wasteful number, since it uses less digits than its factorization.

1628813469 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7377.

The product of its digits is 497664, while the sum is 48.

The square root of 1628813469 is about 40358.5612850607. The cubic root of 1628813469 is about 1176.5862912282.

The spelling of 1628813469 in words is "one billion, six hundred twenty-eight million, eight hundred thirteen thousand, four hundred sixty-nine".