1613562001 has 4 divisors (see below), whose sum is σ = 1669202100. Its totient is φ = 1557921904.

The previous prime is 1613561981. The next prime is 1613562019. The reversal of 1613562001 is 1002653161.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1002653161 = 19 ⋅52771219.

It can be written as a sum of positive squares in 2 ways, for example, as 566392401 + 1047169600 = 23799^2 + 32360^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1613562001 is a prime.

It is a super-2 number, since 2×1613562001² = 5207164662142248002, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1613562091) 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, 27820006 + ... + 27820063.

It is an arithmetic number, because the mean of its divisors is an integer number (417300525).

Almost surely, 2^1613562001 is an apocalyptic number.

It is an amenable number.

1613562001 is a deficient number, since it is larger than the sum of its proper divisors (55640099).

1613562001 is an equidigital number, since it uses as much as digits as its factorization.

1613562001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55640098.

The product of its (nonzero) digits is 1080, while the sum is 25.

The square root of 1613562001 is about 40169.1672928379. The cubic root of 1613562001 is about 1172.9024296797.

The spelling of 1613562001 in words is "one billion, six hundred thirteen million, five hundred sixty-two thousand, one".