1601567220 has 48 divisors (see below), whose sum is σ = 4892061888. Its totient is φ = 388258560.

The previous prime is 1601567189. The next prime is 1601567239. The reversal of 1601567220 is 227651061.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1212649 + ... + 1213968.

It is an arithmetic number, because the mean of its divisors is an integer number (101917956).

Almost surely, 2^1601567220 is an apocalyptic number.

1601567220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1601567220 is an abundant number, since it is smaller than the sum of its proper divisors (3290494668).

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

1601567220 is a wasteful number, since it uses less digits than its factorization.

1601567220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2426640 (or 2426638 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 30.

The square root of 1601567220 is about 40019.5854551243. The cubic root of 1601567220 is about 1169.9888522570.

The spelling of 1601567220 in words is "one billion, six hundred one million, five hundred sixty-seven thousand, two hundred twenty".