1652979280 has 20 divisors (see below), whose sum is σ = 3843177012. Its totient is φ = 661191680.

The previous prime is 1652979257. The next prime is 1652979283. The reversal of 1652979280 is 829792561.

It can be written as a sum of positive squares in 2 ways, for example, as 1055470144 + 597509136 = 32488^2 + 24444^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1652979283) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10331041 + ... + 10331200.

Almost surely, 2^1652979280 is an apocalyptic number.

1652979280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1652979280 is an abundant number, since it is smaller than the sum of its proper divisors (2190197732).

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

1652979280 is a wasteful number, since it uses less digits than its factorization.

1652979280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20662254 (or 20662248 counting only the distinct ones).

The product of its (nonzero) digits is 544320, while the sum is 49.

The square root of 1652979280 is about 40656.8478856883. The cubic root of 1652979280 is about 1182.3765376093.

The spelling of 1652979280 in words is "one billion, six hundred fifty-two million, nine hundred seventy-nine thousand, two hundred eighty".