1494894691 has 2 divisors, whose sum is σ = 1494894692. Its totient is φ = 1494894690.

The previous prime is 1494894671. The next prime is 1494894707. The reversal of 1494894691 is 1964984941.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1494894691 - 2²⁹ = 958023779 is a prime.

It is not a weakly prime, because it can be changed into another prime (1494894631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 747447345 + 747447346.

It is an arithmetic number, because the mean of its divisors is an integer number (747447346).

Almost surely, 2^1494894691 is an apocalyptic number.

1494894691 is a deficient number, since it is larger than the sum of its proper divisors (1).

1494894691 is an equidigital number, since it uses as much as digits as its factorization.

1494894691 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2239488, while the sum is 55.

The square root of 1494894691 is about 38663.8680294665. The cubic root of 1494894691 is about 1143.4140730598.

It can be divided in two parts, 1494894 and 691, that added together give a triangular number (1495585 = T₁₇₂₉).

The spelling of 1494894691 in words is "one billion, four hundred ninety-four million, eight hundred ninety-four thousand, six hundred ninety-one".