1601615052 has 48 divisors (see below), whose sum is σ = 4240696320. Its totient is φ = 522511056.

The previous prime is 1601615027. The next prime is 1601615063. The reversal of 1601615052 is 2505161061.

It is a happy number.

1601615052 is a `hidden beast` number, since 1 + 601 + 6 + 1 + 5 + 0 + 52 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 152688 + ... + 162839.

It is an arithmetic number, because the mean of its divisors is an integer number (88347840).

Almost surely, 2^1601615052 is an apocalyptic number.

1601615052 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1601615052 is an abundant number, since it is smaller than the sum of its proper divisors (2639081268).

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

1601615052 is a wasteful number, since it uses less digits than its factorization.

1601615052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 315587 (or 315579 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 27.

The square root of 1601615052 is about 40020.1830580521. The cubic root of 1601615052 is about 1170.0004996711. Note that the first 3 decimals are identical.

The spelling of 1601615052 in words is "one billion, six hundred one million, six hundred fifteen thousand, fifty-two".