1602565140 has 144 divisors (see below), whose sum is σ = 5003268480. Its totient is φ = 382905600.

The previous prime is 1602565093. The next prime is 1602565141. The reversal of 1602565140 is 415652061.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 1602565098 and 1602565107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1602565141) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 513906 + ... + 517014.

It is an arithmetic number, because the mean of its divisors is an integer number (34744920).

Almost surely, 2^1602565140 is an apocalyptic number.

1602565140 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 1602565140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2501634240).

1602565140 is an abundant number, since it is smaller than the sum of its proper divisors (3400703340).

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

1602565140 is a wasteful number, since it uses less digits than its factorization.

1602565140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3214 (or 3201 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 30.

The square root of 1602565140 is about 40032.0514088399. The cubic root of 1602565140 is about 1170.2318044619.

The spelling of 1602565140 in words is "one billion, six hundred two million, five hundred sixty-five thousand, one hundred forty".