385857503 has 2 divisors, whose sum is σ = 385857504. Its totient is φ = 385857502.

The previous prime is 385857473. The next prime is 385857509. The reversal of 385857503 is 305758583.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 385857503 - 2¹⁰ = 385856479 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (385857509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 192928751 + 192928752.

It is an arithmetic number, because the mean of its divisors is an integer number (192928752).

Almost surely, 2^385857503 is an apocalyptic number.

385857503 is a deficient number, since it is larger than the sum of its proper divisors (1).

385857503 is an equidigital number, since it uses as much as digits as its factorization.

385857503 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 504000, while the sum is 44.

The square root of 385857503 is about 19643.2559164717. The cubic root of 385857503 is about 728.0183340540.

The spelling of 385857503 in words is "three hundred eighty-five million, eight hundred fifty-seven thousand, five hundred three".