1634540493 has 24 divisors (see below), whose sum is σ = 2304202656. Its totient is φ = 1030514400.

The previous prime is 1634540491. The next prime is 1634540597. The reversal of 1634540493 is 3940454361.

It is not a de Polignac number, because 1634540493 - 2¹ = 1634540491 is a prime.

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1634540491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 877383 + ... + 879243.

It is an arithmetic number, because the mean of its divisors is an integer number (96008444).

Almost surely, 2^1634540493 is an apocalyptic number.

It is an amenable number.

1634540493 is a deficient number, since it is larger than the sum of its proper divisors (669662163).

1634540493 is a wasteful number, since it uses less digits than its factorization.

1634540493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2713 (or 2694 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 39.

The square root of 1634540493 is about 40429.4508124956. The cubic root of 1634540493 is about 1177.9636651991.

The spelling of 1634540493 in words is "one billion, six hundred thirty-four million, five hundred forty thousand, four hundred ninety-three".