2154023513 has 2 divisors, whose sum is σ = 2154023514. Its totient is φ = 2154023512.

The previous prime is 2154023497. The next prime is 2154023549. The reversal of 2154023513 is 3153204512.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2120418304 + 33605209 = 46048^2 + 5797^2 .

It is a cyclic number.

It is not a de Polignac number, because 2154023513 - 2⁴ = 2154023497 is a prime.

It is a super-2 number, since 2×2154023513² = 9279634589113722338, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2154023713) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1077011756 + 1077011757.

It is an arithmetic number, because the mean of its divisors is an integer number (1077011757).

Almost surely, 2^2154023513 is an apocalyptic number.

It is an amenable number.

2154023513 is a deficient number, since it is larger than the sum of its proper divisors (1).

2154023513 is an equidigital number, since it uses as much as digits as its factorization.

2154023513 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3600, while the sum is 26.

The square root of 2154023513 is about 46411.4588544683. The cubic root of 2154023513 is about 1291.4674950690.

The spelling of 2154023513 in words is "two billion, one hundred fifty-four million, twenty-three thousand, five hundred thirteen".