1601985528 has 96 divisors (see below), whose sum is σ = 5097259440. Its totient is φ = 448104960.

The previous prime is 1601985527. The next prime is 1601985529. The reversal of 1601985528 is 8255891061.

It is a happy number.

1601985528 is a `hidden beast` number, since 1 + 6 + 0 + 1 + 98 + 552 + 8 = 666.

It is an interprime number because it is at equal distance from previous prime (1601985527) and next prime (1601985529).

It is a super-3 number, since 3×1601985528³ (a number of 29 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1601985527) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 67501 + ... + 88092.

Almost surely, 2^1601985528 is an apocalyptic number.

1601985528 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1601985528 is an abundant number, since it is smaller than the sum of its proper divisors (3495273912).

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

1601985528 is a wasteful number, since it uses less digits than its factorization.

1601985528 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155629 (or 155622 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 45.

The square root of 1601985528 is about 40024.8114049273. The cubic root of 1601985528 is about 1170.0907052185.

The spelling of 1601985528 in words is "one billion, six hundred one million, nine hundred eighty-five thousand, five hundred twenty-eight".