1261463003 has 2 divisors, whose sum is σ = 1261463004. Its totient is φ = 1261463002.

The previous prime is 1261462987. The next prime is 1261463023. The reversal of 1261463003 is 3003641621.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1261463003 - 2⁴ = 1261462987 is a prime.

It is a super-3 number, since 3×1261463003³ (a number of 28 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (1261463023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 630731501 + 630731502.

It is an arithmetic number, because the mean of its divisors is an integer number (630731502).

Almost surely, 2^1261463003 is an apocalyptic number.

1261463003 is a deficient number, since it is larger than the sum of its proper divisors (1).

1261463003 is an equidigital number, since it uses as much as digits as its factorization.

1261463003 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2592, while the sum is 26.

The square root of 1261463003 is about 35517.0804402614. The cubic root of 1261463003 is about 1080.5001692748.

The spelling of 1261463003 in words is "one billion, two hundred sixty-one million, four hundred sixty-three thousand, three".