1634540500 has 24 divisors (see below), whose sum is σ = 3569837544. Its totient is φ = 653816000.

The previous prime is 1634540491. The next prime is 1634540597. The reversal of 1634540500 is 50454361.

It can be written as a sum of positive squares in 4 ways, for example, as 53523856 + 1581016644 = 7316^2 + 39762^2 .

It is a super-2 number, since 2×1634540500² = 5343445292280500000, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1634041 + ... + 1635040.

It is an arithmetic number, because the mean of its divisors is an integer number (148743231).

Almost surely, 2^1634540500 is an apocalyptic number.

1634540500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1634540500 is an abundant number, since it is smaller than the sum of its proper divisors (1935297044).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1634540500 is a wasteful number, since it uses less digits than its factorization.

1634540500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3269100 (or 3269088 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 28.

The square root of 1634540500 is about 40429.4508990661. The cubic root of 1634540500 is about 1177.9636668807.

Adding to 1634540500 its reverse (50454361), we get a palindrome (1684994861).

It can be divided in two parts, 16 and 34540500, that added together give a triangular number (34540516 = T₈₃₁₁).

The spelling of 1634540500 in words is "one billion, six hundred thirty-four million, five hundred forty thousand, five hundred".