1672005413 has 8 divisors (see below), whose sum is σ = 1801088856. Its totient is φ = 1542988800.

The previous prime is 1672005397. The next prime is 1672005431. The reversal of 1672005413 is 3145002761.

It can be written as a sum of positive squares in 4 ways, for example, as 271524484 + 1400480929 = 16478^2 + 37423^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1672005413 - 2⁴ = 1672005397 is a prime.

It is a super-2 number, since 2×1672005413² = 5591204202202601138, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1672005463) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43253 + ... + 72213.

It is an arithmetic number, because the mean of its divisors is an integer number (225136107).

Almost surely, 2^1672005413 is an apocalyptic number.

1672005413 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1672005413 is a deficient number, since it is larger than the sum of its proper divisors (129083443).

1672005413 is a wasteful number, since it uses less digits than its factorization.

1672005413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33415.

The product of its (nonzero) digits is 5040, while the sum is 29.

The square root of 1672005413 is about 40890.1627900893. The cubic root of 1672005413 is about 1186.8957089118.

The spelling of 1672005413 in words is "one billion, six hundred seventy-two million, five thousand, four hundred thirteen".