1800162770445 has 48 divisors (see below), whose sum is σ = 3361769257392. Its totient is φ = 885847495680.

The previous prime is 1800162770437. The next prime is 1800162770477. The reversal of 1800162770445 is 5440772610081.

1800162770445 is a `hidden beast` number, since 1 + 80 + 0 + 1 + 62 + 7 + 70 + 445 = 666.

It can be written as a sum of positive squares in 8 ways, for example, as 6563844 + 1800156206601 = 2562^2 + 1341699^2 .

It is not a de Polignac number, because 1800162770445 - 2³ = 1800162770437 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 1800162770445.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 673915 + ... + 2013575.

It is an arithmetic number, because the mean of its divisors is an integer number (70036859529).

Almost surely, 2^{1800162770445} is an apocalyptic number.

1800162770445 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1800162770445 is a deficient number, since it is larger than the sum of its proper divisors (1561606486947).

1800162770445 is a wasteful number, since it uses less digits than its factorization.

1800162770445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1341982 (or 1341979 counting only the distinct ones).

The product of its (nonzero) digits is 376320, while the sum is 45.

The spelling of 1800162770445 in words is "one trillion, eight hundred billion, one hundred sixty-two million, seven hundred seventy thousand, four hundred forty-five".