4154665261 has 2 divisors, whose sum is σ = 4154665262. Its totient is φ = 4154665260.

The previous prime is 4154665219. The next prime is 4154665313. The reversal of 4154665261 is 1625664514.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4007649636 + 147015625 = 63306^2 + 12125^2 .

It is a cyclic number.

It is not a de Polignac number, because 4154665261 - 2²⁷ = 4020447533 is a prime.

It is a super-2 number, since 2×4154665261² = 34522486861920396242, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4154665061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2077332630 + 2077332631.

It is an arithmetic number, because the mean of its divisors is an integer number (2077332631).

Almost surely, 2^4154665261 is an apocalyptic number.

It is an amenable number.

4154665261 is a deficient number, since it is larger than the sum of its proper divisors (1).

4154665261 is an equidigital number, since it uses as much as digits as its factorization.

4154665261 is an evil number, because the sum of its binary digits is even.

The product of its digits is 172800, while the sum is 40.

The square root of 4154665261 is about 64456.6929108219. The cubic root of 4154665261 is about 1607.6025246558.

The spelling of 4154665261 in words is "four billion, one hundred fifty-four million, six hundred sixty-five thousand, two hundred sixty-one".