1653260040 has 48 divisors (see below), whose sum is σ = 5373096300. Its totient is φ = 440869248.

The previous prime is 1653260029. The next prime is 1653260057. The reversal of 1653260040 is 400623561.

1653260040 is a `hidden beast` number, since 1 + 6 + 53 + 2 + 600 + 4 + 0 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1516790916 + 136469124 = 38946^2 + 11682^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1653259986 and 1653260013.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2295835 + ... + 2296554.

Almost surely, 2^1653260040 is an apocalyptic number.

1653260040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1653260040 is an abundant number, since it is smaller than the sum of its proper divisors (3719836260).

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

1653260040 is a wasteful number, since it uses less digits than its factorization.

1653260040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4592406 (or 4592399 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 1653260040 is about 40660.3005399616. The cubic root of 1653260040 is about 1182.4434763882.

The spelling of 1653260040 in words is "one billion, six hundred fifty-three million, two hundred sixty thousand, forty".