1607649620 has 12 divisors (see below), whose sum is σ = 3376064244. Its totient is φ = 643059840.

The previous prime is 1607649619. The next prime is 1607649629. The reversal of 1607649620 is 269467061.

It can be written as a sum of positive squares in 2 ways, for example, as 167598916 + 1440050704 = 12946^2 + 37948^2 .

It is a super-2 number, since 2×1607649620² = 5169074601372288800, which contains 22 as substring.

It is a hoax number, since the sum of its digits (41) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1607649629) 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, 40191221 + ... + 40191260.

It is an arithmetic number, because the mean of its divisors is an integer number (281338687).

Almost surely, 2^1607649620 is an apocalyptic number.

1607649620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1607649620 is an abundant number, since it is smaller than the sum of its proper divisors (1768414624).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1607649620 is a wasteful number, since it uses less digits than its factorization.

1607649620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80382490 (or 80382488 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 41.

The square root of 1607649620 is about 40095.5062319956. The cubic root of 1607649620 is about 1171.4681013119.

The spelling of 1607649620 in words is "one billion, six hundred seven million, six hundred forty-nine thousand, six hundred twenty".