1601703680 has 144 divisors (see below), whose sum is σ = 3955875840. Its totient is φ = 621121536.

The previous prime is 1601703641. The next prime is 1601703703. The reversal of 1601703680 is 863071061.

It is a Harshad number since it is a multiple of its sum of digits (32).

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, 9590957 + ... + 9591123.

It is an arithmetic number, because the mean of its divisors is an integer number (27471360).

Almost surely, 2^1601703680 is an apocalyptic number.

1601703680 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 1601703680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1977937920).

1601703680 is an abundant number, since it is smaller than the sum of its proper divisors (2354172160).

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

1601703680 is a wasteful number, since it uses less digits than its factorization.

1601703680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 374 (or 360 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 32.

The square root of 1601703680 is about 40021.2903340210. The cubic root of 1601703680 is about 1170.0220805729.

The spelling of 1601703680 in words is "one billion, six hundred one million, seven hundred three thousand, six hundred eighty".