1992377045 has 4 divisors (see below), whose sum is σ = 2390852460. Its totient is φ = 1593901632.

The previous prime is 1992377011. The next prime is 1992377071. The reversal of 1992377045 is 5407732991.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5407732991 = 3467 ⋅1559773.

It can be written as a sum of positive squares in 2 ways, for example, as 1341463876 + 650913169 = 36626^2 + 25513^2 .

It is a cyclic number.

It is not a de Polignac number, because 1992377045 - 2¹⁴ = 1992360661 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 199237700 + ... + 199237709.

It is an arithmetic number, because the mean of its divisors is an integer number (597713115).

Almost surely, 2^1992377045 is an apocalyptic number.

It is an amenable number.

1992377045 is a deficient number, since it is larger than the sum of its proper divisors (398475415).

1992377045 is an equidigital number, since it uses as much as digits as its factorization.

1992377045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 398475414.

The product of its (nonzero) digits is 476280, while the sum is 47.

The square root of 1992377045 is about 44636.0509565979. The cubic root of 1992377045 is about 1258.3182916300.

The spelling of 1992377045 in words is "one billion, nine hundred ninety-two million, three hundred seventy-seven thousand, forty-five".