1268404061 has 2 divisors, whose sum is σ = 1268404062. Its totient is φ = 1268404060.

The previous prime is 1268404043. The next prime is 1268404073. The reversal of 1268404061 is 1604048621.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1102638436 + 165765625 = 33206^2 + 12875^2 .

It is a cyclic number.

It is not a de Polignac number, because 1268404061 - 2¹⁴ = 1268387677 is a prime.

It is a super-2 number, since 2×1268404061² = 3217697723922583442, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1268403061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 634202030 + 634202031.

It is an arithmetic number, because the mean of its divisors is an integer number (634202031).

Almost surely, 2^1268404061 is an apocalyptic number.

It is an amenable number.

1268404061 is a deficient number, since it is larger than the sum of its proper divisors (1).

1268404061 is an equidigital number, since it uses as much as digits as its factorization.

1268404061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9216, while the sum is 32.

The square root of 1268404061 is about 35614.6607592997. The cubic root of 1268404061 is about 1082.4783223119.

The spelling of 1268404061 in words is "one billion, two hundred sixty-eight million, four hundred four thousand, sixty-one".