1671356616 has 16 divisors (see below), whose sum is σ = 4178391600. Its totient is φ = 557118864.

The previous prime is 1671356611. The next prime is 1671356639. The reversal of 1671356616 is 6166531761.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1671356611) 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, 34819906 + ... + 34819953.

It is an arithmetic number, because the mean of its divisors is an integer number (261149475).

Almost surely, 2^1671356616 is an apocalyptic number.

It is an amenable number.

1671356616 is an abundant number, since it is smaller than the sum of its proper divisors (2507034984).

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

1671356616 is a wasteful number, since it uses less digits than its factorization.

1671356616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69639868 (or 69639864 counting only the distinct ones).

The product of its digits is 136080, while the sum is 42.

The square root of 1671356616 is about 40882.2286085287. The cubic root of 1671356616 is about 1186.7421699353.

The spelling of 1671356616 in words is "one billion, six hundred seventy-one million, three hundred fifty-six thousand, six hundred sixteen".