1671105428 has 6 divisors (see below), whose sum is σ = 2924434506. Its totient is φ = 835552712.

The previous prime is 1671105391. The next prime is 1671105451. The reversal of 1671105428 is 8245011761.

It can be written as a sum of positive squares in only one way, i.e., 1040191504 + 630913924 = 32252^2 + 25118^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 208888175 + ... + 208888182.

It is an arithmetic number, because the mean of its divisors is an integer number (487405751).

Almost surely, 2^1671105428 is an apocalyptic number.

It is an amenable number.

1671105428 is a deficient number, since it is larger than the sum of its proper divisors (1253329078).

1671105428 is a wasteful number, since it uses less digits than its factorization.

1671105428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 417776361 (or 417776359 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 35.

The square root of 1671105428 is about 40879.1564002977. The cubic root of 1671105428 is about 1186.6827151738.

The spelling of 1671105428 in words is "one billion, six hundred seventy-one million, one hundred five thousand, four hundred twenty-eight".