1626161604 has 48 divisors (see below), whose sum is σ = 3838556736. Its totient is φ = 535766400.

The previous prime is 1626161591. The next prime is 1626161611. The reversal of 1626161604 is 4061616261.

It is a happy number.

It is a hoax number, since the sum of its digits (33) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 693474 + ... + 695814.

It is an arithmetic number, because the mean of its divisors is an integer number (79969932).

Almost surely, 2^1626161604 is an apocalyptic number.

It is an amenable number.

1626161604 is an abundant number, since it is smaller than the sum of its proper divisors (2212395132).

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

1626161604 is a wasteful number, since it uses less digits than its factorization.

1626161604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2996 (or 2994 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 33.

The square root of 1626161604 is about 40325.6940919806. The cubic root of 1626161604 is about 1175.9474124988.

Adding to 1626161604 its reverse (4061616261), we get a palindrome (5687777865).

The spelling of 1626161604 in words is "one billion, six hundred twenty-six million, one hundred sixty-one thousand, six hundred four".