1572116605 has 8 divisors (see below), whose sum is σ = 1886967864. Its totient is φ = 1257408000.

The previous prime is 1572116603. The next prime is 1572116627. The reversal of 1572116605 is 5066112751.

It can be written as a sum of positive squares in 4 ways, for example, as 361494169 + 1210622436 = 19013^2 + 34794^2 .

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

It is not a de Polignac number, because 1572116605 - 2¹ = 1572116603 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 (1572116603) 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, 9696 + ... + 56905.

It is an arithmetic number, because the mean of its divisors is an integer number (235870983).

Almost surely, 2^1572116605 is an apocalyptic number.

It is an amenable number.

1572116605 is a deficient number, since it is larger than the sum of its proper divisors (314851259).

1572116605 is an equidigital number, since it uses as much as digits as its factorization.

1572116605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71327.

The product of its (nonzero) digits is 12600, while the sum is 34.

The square root of 1572116605 is about 39649.9256619732. The cubic root of 1572116605 is about 1162.7729451979.

The spelling of 1572116605 in words is "one billion, five hundred seventy-two million, one hundred sixteen thousand, six hundred five".