385491074261 has 2 divisors, whose sum is σ = 385491074262. Its totient is φ = 385491074260.

The previous prime is 385491074237. The next prime is 385491074279. The reversal of 385491074261 is 162470194583.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 370279552036 + 15211522225 = 608506^2 + 123335^2 .

It is a cyclic number.

It is not a de Polignac number, because 385491074261 - 2³⁴ = 368311205077 is a prime.

It is a super-2 number, since 2×385491074261² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (385491074281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 192745537130 + 192745537131.

It is an arithmetic number, because the mean of its divisors is an integer number (192745537131).

It is a 1-persistent number, because it is pandigital, but 2⋅385491074261 = 770982148522 is not.

Almost surely, 2^385491074261 is an apocalyptic number.

It is an amenable number.

385491074261 is a deficient number, since it is larger than the sum of its proper divisors (1).

385491074261 is an equidigital number, since it uses as much as digits as its factorization.

385491074261 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1451520, while the sum is 50.

The spelling of 385491074261 in words is "three hundred eighty-five billion, four hundred ninety-one million, seventy-four thousand, two hundred sixty-one".