1671145101 has 30 divisors (see below), whose sum is σ = 2651924330. Its totient is φ = 1048546944.

The previous prime is 1671145093. The next prime is 1671145139. The reversal of 1671145101 is 1015411761.

It can be written as a sum of positive squares in 3 ways, for example, as 1247855625 + 423289476 = 35325^2 + 20574^2 .

It is not a de Polignac number, because 1671145101 - 2³ = 1671145093 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1671145181) 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 29 ways as a sum of consecutive naturals, for example, 12286 + ... + 59103.

Almost surely, 2^1671145101 is an apocalyptic number.

It is an amenable number.

1671145101 is a deficient number, since it is larger than the sum of its proper divisors (980779229).

1671145101 is an equidigital number, since it uses as much as digits as its factorization.

1671145101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71435 (or 71409 counting only the distinct ones).

The product of its (nonzero) digits is 840, while the sum is 27.

The square root of 1671145101 is about 40879.6416447111. The cubic root of 1671145101 is about 1186.6921059420.

Adding to 1671145101 its reverse (1015411761), we get a palindrome (2686556862).

The spelling of 1671145101 in words is "one billion, six hundred seventy-one million, one hundred forty-five thousand, one hundred one".