1671472349 has 4 divisors (see below), whose sum is σ = 1671703260. Its totient is φ = 1671241440.

The previous prime is 1671472279. The next prime is 1671472357. The reversal of 1671472349 is 9432741761.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 885062500 + 786409849 = 29750^2 + 28043^2 .

It is a cyclic number.

It is not a de Polignac number, because 1671472349 - 2²⁰ = 1670423773 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1671478349) 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, 104234 + ... + 119195.

It is an arithmetic number, because the mean of its divisors is an integer number (417925815).

Almost surely, 2^1671472349 is an apocalyptic number.

It is an amenable number.

1671472349 is a deficient number, since it is larger than the sum of its proper divisors (230911).

1671472349 is an equidigital number, since it uses as much as digits as its factorization.

1671472349 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 230910.

The product of its digits is 254016, while the sum is 44.

The square root of 1671472349 is about 40883.6440278995. The cubic root of 1671472349 is about 1186.7695612693.

The spelling of 1671472349 in words is "one billion, six hundred seventy-one million, four hundred seventy-two thousand, three hundred forty-nine".