1920200557 has 8 divisors (see below), whose sum is σ = 2139334272. Its totient is φ = 1708495200.

The previous prime is 1920200533. The next prime is 1920200573. The reversal of 1920200557 is 7550020291.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1920200557 is a prime.

It is a super-2 number, since 2×1920200557² = 7374340358206220498, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1920200957) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1856544 + ... + 1857577.

It is an arithmetic number, because the mean of its divisors is an integer number (267416784).

Almost surely, 2^1920200557 is an apocalyptic number.

It is an amenable number.

1920200557 is a deficient number, since it is larger than the sum of its proper divisors (219133715).

1920200557 is a wasteful number, since it uses less digits than its factorization.

1920200557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3714179.

The product of its (nonzero) digits is 6300, while the sum is 31.

The square root of 1920200557 is about 43820.0930738400. The cubic root of 1920200557 is about 1242.9362770713.

The spelling of 1920200557 in words is "one billion, nine hundred twenty million, two hundred thousand, five hundred fifty-seven".