1851398357023 has 2 divisors, whose sum is σ = 1851398357024. Its totient is φ = 1851398357022.

The previous prime is 1851398356897. The next prime is 1851398357047. The reversal of 1851398357023 is 3207538931581.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1851398357023 - 2³³ = 1842808422431 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1851398057023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 925699178511 + 925699178512.

It is an arithmetic number, because the mean of its divisors is an integer number (925699178512).

Almost surely, 2^{1851398357023} is an apocalyptic number.

1851398357023 is a deficient number, since it is larger than the sum of its proper divisors (1).

1851398357023 is an equidigital number, since it uses as much as digits as its factorization.

1851398357023 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5443200, while the sum is 55.

The spelling of 1851398357023 in words is "one trillion, eight hundred fifty-one billion, three hundred ninety-eight million, three hundred fifty-seven thousand, twenty-three".