1601671600 has 30 divisors (see below), whose sum is σ = 3848016980. Its totient is φ = 640668480.

The previous prime is 1601671583. The next prime is 1601671613. The reversal of 1601671600 is 61761061.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2001690 + ... + 2002489.

Almost surely, 2^1601671600 is an apocalyptic number.

1601671600 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1601671600 is an abundant number, since it is smaller than the sum of its proper divisors (2246345380).

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

1601671600 is a wasteful number, since it uses less digits than its factorization.

1601671600 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4004197 (or 4004186 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 28.

The square root of 1601671600 is about 40020.8895453362. The cubic root of 1601671600 is about 1170.0142691907.

It can be divided in two parts, 16016 and 71600, that added together give a square (87616 = 296²).

The spelling of 1601671600 in words is "one billion, six hundred one million, six hundred seventy-one thousand, six hundred".