1653409764 has 36 divisors (see below), whose sum is σ = 4188444624. Its totient is φ = 549950832.

The previous prime is 1653409759. The next prime is 1653409801. The reversal of 1653409764 is 4679043561.

1653409764 is a `hidden beast` number, since 165 + 340 + 97 + 64 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

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, 32362 + ... + 65985.

It is an arithmetic number, because the mean of its divisors is an integer number (116345684).

Almost surely, 2^1653409764 is an apocalyptic number.

It is an amenable number.

1653409764 is an abundant number, since it is smaller than the sum of its proper divisors (2535034860).

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

1653409764 is a wasteful number, since it uses less digits than its factorization.

1653409764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98824 (or 98819 counting only the distinct ones).

The product of its (nonzero) digits is 544320, while the sum is 45.

The square root of 1653409764 is about 40662.1416553531. The cubic root of 1653409764 is about 1182.4791704752.

The spelling of 1653409764 in words is "one billion, six hundred fifty-three million, four hundred nine thousand, seven hundred sixty-four".