2075571990 has 144 divisors (see below), whose sum is σ = 5775775200. Its totient is φ = 517017600.

The previous prime is 2075571959. The next prime is 2075572001. The reversal of 2075571990 is 991755702.

2075571990 is a `hidden beast` number, since 2 + 0 + 7 + 557 + 1 + 9 + 90 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 5175790 + ... + 5176190.

It is an arithmetic number, because the mean of its divisors is an integer number (40109550).

Almost surely, 2^2075571990 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2075571990, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2887887600).

2075571990 is an abundant number, since it is smaller than the sum of its proper divisors (3700203210).

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

2075571990 is a wasteful number, since it uses less digits than its factorization.

2075571990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 647 (or 627 counting only the distinct ones).

The product of its (nonzero) digits is 198450, while the sum is 45.

The square root of 2075571990 is about 45558.4458690153. The cubic root of 2075571990 is about 1275.5943895264.

The spelling of 2075571990 in words is "two billion, seventy-five million, five hundred seventy-one thousand, nine hundred ninety".