1652120665 has 16 divisors (see below), whose sum is σ = 2203923456. Its totient is φ = 1180670400.

The previous prime is 1652120663. The next prime is 1652120669. The reversal of 1652120665 is 5660212561.

It is not a de Polignac number, because 1652120665 - 2¹ = 1652120663 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1652120665.

It is not an unprimeable number, because it can be changed into a prime (1652120663) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 407941 + ... + 411970.

It is an arithmetic number, because the mean of its divisors is an integer number (137745216).

Almost surely, 2^1652120665 is an apocalyptic number.

It is an amenable number.

1652120665 is a deficient number, since it is larger than the sum of its proper divisors (551802791).

1652120665 is a wasteful number, since it uses less digits than its factorization.

1652120665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 819960.

The product of its (nonzero) digits is 21600, while the sum is 34.

The square root of 1652120665 is about 40646.2872228202. The cubic root of 1652120665 is about 1182.1717796365.

The spelling of 1652120665 in words is "one billion, six hundred fifty-two million, one hundred twenty thousand, six hundred sixty-five".