1261094407 has 2 divisors, whose sum is σ = 1261094408. Its totient is φ = 1261094406.

The previous prime is 1261094339. The next prime is 1261094413. The reversal of 1261094407 is 7044901621.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1261094407 - 2¹⁹ = 1260570119 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1261097407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 630547203 + 630547204.

It is an arithmetic number, because the mean of its divisors is an integer number (630547204).

Almost surely, 2^1261094407 is an apocalyptic number.

1261094407 is a deficient number, since it is larger than the sum of its proper divisors (1).

1261094407 is an equidigital number, since it uses as much as digits as its factorization.

1261094407 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12096, while the sum is 34.

The square root of 1261094407 is about 35511.8910648250. The cubic root of 1261094407 is about 1080.3949193027.

The spelling of 1261094407 in words is "one billion, two hundred sixty-one million, ninety-four thousand, four hundred seven".