1992188895 has 8 divisors (see below), whose sum is σ = 3187502256. Its totient is φ = 1062500736.

The previous prime is 1992188881. The next prime is 1992188909. The reversal of 1992188895 is 5988812991.

It is an interprime number because it is at equal distance from previous prime (1992188881) and next prime (1992188909).

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

It is not a de Polignac number, because 1992188895 - 2⁷ = 1992188767 is a prime.

It is a super-2 number, since 2×1992188895² = 7937633186722642050, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 66406282 + ... + 66406311.

It is an arithmetic number, because the mean of its divisors is an integer number (398437782).

Almost surely, 2^1992188895 is an apocalyptic number.

1992188895 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1992188895 is a deficient number, since it is larger than the sum of its proper divisors (1195313361).

1992188895 is a wasteful number, since it uses less digits than its factorization.

1992188895 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132812601.

The product of its digits is 3732480, while the sum is 60.

The square root of 1992188895 is about 44633.9433055158. The cubic root of 1992188895 is about 1258.2786806471.

The spelling of 1992188895 in words is "one billion, nine hundred ninety-two million, one hundred eighty-eight thousand, eight hundred ninety-five".