1260613391 has 2 divisors, whose sum is σ = 1260613392. Its totient is φ = 1260613390.

The previous prime is 1260613369. The next prime is 1260613399. The reversal of 1260613391 is 1933160621.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1260613391 - 2¹⁴ = 1260597007 is a prime.

It is a super-2 number, since 2×1260613391² = 3178292243137037762, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1260613399) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 630306695 + 630306696.

It is an arithmetic number, because the mean of its divisors is an integer number (630306696).

Almost surely, 2^1260613391 is an apocalyptic number.

1260613391 is a deficient number, since it is larger than the sum of its proper divisors (1).

1260613391 is an equidigital number, since it uses as much as digits as its factorization.

1260613391 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5832, while the sum is 32.

The square root of 1260613391 is about 35505.1178141969. The cubic root of 1260613391 is about 1080.2575377480.

The spelling of 1260613391 in words is "one billion, two hundred sixty million, six hundred thirteen thousand, three hundred ninety-one".