1799770545 has 12 divisors (see below), whose sum is σ = 3119602356. Its totient is φ = 959877600.

The previous prime is 1799770541. The next prime is 1799770561. The reversal of 1799770545 is 5450779971.

It is a happy number.

1799770545 is a `hidden beast` number, since 1 + 7 + 9 + 97 + 7 + 0 + 545 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 507871296 + 1291899249 = 22536^2 + 35943^2 .

It is not a de Polignac number, because 1799770545 - 2² = 1799770541 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1799770491 and 1799770500.

It is not an unprimeable number, because it can be changed into a prime (1799770541) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19997406 + ... + 19997495.

It is an arithmetic number, because the mean of its divisors is an integer number (259966863).

Almost surely, 2^1799770545 is an apocalyptic number.

1799770545 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1799770545 is a deficient number, since it is larger than the sum of its proper divisors (1319831811).

1799770545 is a wasteful number, since it uses less digits than its factorization.

1799770545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39994912 (or 39994909 counting only the distinct ones).

The product of its (nonzero) digits is 2778300, while the sum is 54.

The square root of 1799770545 is about 42423.7026319014. The cubic root of 1799770545 is about 1216.3887083382.

The spelling of 1799770545 in words is "one billion, seven hundred ninety-nine million, seven hundred seventy thousand, five hundred forty-five".