1291552103 has 2 divisors, whose sum is σ = 1291552104. Its totient is φ = 1291552102.

The previous prime is 1291552079. The next prime is 1291552109. The reversal of 1291552103 is 3012551921.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1291552103 - 2¹⁸ = 1291289959 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1291552109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 645776051 + 645776052.

It is an arithmetic number, because the mean of its divisors is an integer number (645776052).

Almost surely, 2^1291552103 is an apocalyptic number.

1291552103 is a deficient number, since it is larger than the sum of its proper divisors (1).

1291552103 is an equidigital number, since it uses as much as digits as its factorization.

1291552103 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2700, while the sum is 29.

The square root of 1291552103 is about 35938.1705572223. The cubic root of 1291552103 is about 1089.0236474923.

The spelling of 1291552103 in words is "one billion, two hundred ninety-one million, five hundred fifty-two thousand, one hundred three".