1654620001 has 4 divisors (see below), whose sum is σ = 1654852500. Its totient is φ = 1654387504.

The previous prime is 1654619987. The next prime is 1654620031. The reversal of 1654620001 is 1000264561.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1000264561 = 11801 ⋅84761.

It can be written as a sum of positive squares in 2 ways, for example, as 1028869776 + 625750225 = 32076^2 + 25015^2 .

It is a cyclic number.

It is not a de Polignac number, because 1654620001 - 2¹³ = 1654611809 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1654620031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 105226 + ... + 119923.

It is an arithmetic number, because the mean of its divisors is an integer number (413713125).

Almost surely, 2^1654620001 is an apocalyptic number.

It is an amenable number.

1654620001 is a deficient number, since it is larger than the sum of its proper divisors (232499).

1654620001 is an equidigital number, since it uses as much as digits as its factorization.

1654620001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 232498.

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 1654620001 is about 40677.0205521496. The cubic root of 1654620001 is about 1182.7676109756.

Adding to 1654620001 its reverse (1000264561), we get a palindrome (2654884562).

The spelling of 1654620001 in words is "one billion, six hundred fifty-four million, six hundred twenty thousand, one".