1992648893 has 8 divisors (see below), whose sum is σ = 2020510008. Its totient is φ = 1964967424.

The previous prime is 1992648869. The next prime is 1992648919. The reversal of 1992648893 is 3988462991.

It can be written as a sum of positive squares in 4 ways, for example, as 197177764 + 1795471129 = 14042^2 + 42373^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 1992648893 - 2¹⁸ = 1992386749 is a prime.

It is a super-2 number, since 2×1992648893² = 7941299221548250898, 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 (1992648803) 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, 22496 + ... + 67017.

It is an arithmetic number, because the mean of its divisors is an integer number (252563751).

Almost surely, 2^1992648893 is an apocalyptic number.

It is an amenable number.

1992648893 is a deficient number, since it is larger than the sum of its proper divisors (27861115).

1992648893 is a wasteful number, since it uses less digits than its factorization.

1992648893 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89823.

The product of its digits is 6718464, while the sum is 59.

The square root of 1992648893 is about 44639.0960145924. The cubic root of 1992648893 is about 1258.3755190434.

The spelling of 1992648893 in words is "one billion, nine hundred ninety-two million, six hundred forty-eight thousand, eight hundred ninety-three".