1607991201 has 12 divisors (see below), whose sum is σ = 2352055680. Its totient is φ = 1058424120.

The previous prime is 1607991197. The next prime is 1607991227. The reversal of 1607991201 is 1021997061.

It is not a de Polignac number, because 1607991201 - 2² = 1607991197 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1607991701) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1130085 + ... + 1131506.

It is an arithmetic number, because the mean of its divisors is an integer number (196004640).

Almost surely, 2^1607991201 is an apocalyptic number.

It is an amenable number.

1607991201 is a deficient number, since it is larger than the sum of its proper divisors (744064479).

1607991201 is a wasteful number, since it uses less digits than its factorization.

1607991201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2261676 (or 2261673 counting only the distinct ones).

The product of its (nonzero) digits is 6804, while the sum is 36.

The square root of 1607991201 is about 40099.7655978186. The cubic root of 1607991201 is about 1171.5510636074.

The spelling of 1607991201 in words is "one billion, six hundred seven million, nine hundred ninety-one thousand, two hundred one".