1565652330 has 144 divisors (see below), whose sum is σ = 4534167456. Its totient is φ = 371729280.

The previous prime is 1565652329. The next prime is 1565652359. The reversal of 1565652330 is 332565651.

1565652330 is a `hidden beast` number, since 1 + 56 + 56 + 523 + 30 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 2780629 + ... + 2781191.

It is an arithmetic number, because the mean of its divisors is an integer number (31487274).

Almost surely, 2^1565652330 is an apocalyptic number.

1565652330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1565652330, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2267083728).

1565652330 is an abundant number, since it is smaller than the sum of its proper divisors (2968515126).

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

1565652330 is a wasteful number, since it uses less digits than its factorization.

1565652330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 693 (or 637 counting only the distinct ones).

The product of its (nonzero) digits is 81000, while the sum is 36.

The square root of 1565652330 is about 39568.3248318652. The cubic root of 1565652330 is about 1161.1770479171.

The spelling of 1565652330 in words is "one billion, five hundred sixty-five million, six hundred fifty-two thousand, three hundred thirty".