1073842391 has 2 divisors, whose sum is σ = 1073842392. Its totient is φ = 1073842390.

The previous prime is 1073842369. The next prime is 1073842457. The reversal of 1073842391 is 1932483701.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1073842391 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1073842321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 536921195 + 536921196.

It is an arithmetic number, because the mean of its divisors is an integer number (536921196).

Almost surely, 2^1073842391 is an apocalyptic number.

1073842391 is a deficient number, since it is larger than the sum of its proper divisors (1).

1073842391 is an equidigital number, since it uses as much as digits as its factorization.

1073842391 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36288, while the sum is 38.

The square root of 1073842391 is about 32769.5344947102. The cubic root of 1073842391 is about 1024.0319683903.

The spelling of 1073842391 in words is "one billion, seventy-three million, eight hundred forty-two thousand, three hundred ninety-one".