1653000000 has 392 divisors, whose sum is σ = 5953048800. Its totient is φ = 403200000.

The previous prime is 1652999983. The next prime is 1653000043. The reversal of 1653000000 is 3561.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 56999986 + ... + 57000014.

Almost surely, 2^1653000000 is an apocalyptic number.

1653000000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1653000000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2976524400).

1653000000 is an abundant number, since it is smaller than the sum of its proper divisors (4300048800).

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

1653000000 is an frugal number, since it uses more digits than its factorization.

1653000000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93 (or 58 counting only the distinct ones).

The product of its (nonzero) digits is 90, while the sum is 15.

The square root of 1653000000 is about 40657.1027005122. The cubic root of 1653000000 is about 1182.3814779293.

Adding to 1653000000 its reverse (3561), we get a palindrome (1653003561).

The spelling of 1653000000 in words is "one billion, six hundred fifty-three million", and thus it is an aban number.