634951037533 has 2 divisors, whose sum is σ = 634951037534. Its totient is φ = 634951037532.

The previous prime is 634951037509. The next prime is 634951037537. The reversal of 634951037533 is 335730159436.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 366815556409 + 268135481124 = 605653^2 + 517818^2 .

It is a cyclic number.

It is not a de Polignac number, because 634951037533 - 2¹³ = 634951029341 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (634951037537) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 317475518766 + 317475518767.

It is an arithmetic number, because the mean of its divisors is an integer number (317475518767).

Almost surely, 2^634951037533 is an apocalyptic number.

It is an amenable number.

634951037533 is a deficient number, since it is larger than the sum of its proper divisors (1).

634951037533 is an equidigital number, since it uses as much as digits as its factorization.

634951037533 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3061800, while the sum is 49.

The spelling of 634951037533 in words is "six hundred thirty-four billion, nine hundred fifty-one million, thirty-seven thousand, five hundred thirty-three".