1945780064 has 24 divisors (see below), whose sum is σ = 3837251880. Its totient is φ = 971239936.

The previous prime is 1945780061. The next prime is 1945780079. The reversal of 1945780064 is 4600875491.

It is a junction number, because it is equal to n+sod(n) for n = 1945779997 and 1945780024.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1945780061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32294 + ... + 70245.

It is an arithmetic number, because the mean of its divisors is an integer number (159885495).

Almost surely, 2^1945780064 is an apocalyptic number.

It is an amenable number.

1945780064 is a deficient number, since it is larger than the sum of its proper divisors (1891471816).

1945780064 is a wasteful number, since it uses less digits than its factorization.

1945780064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103142 (or 103134 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 44.

The square root of 1945780064 is about 44110.9970868943. The cubic root of 1945780064 is about 1248.4311120162.

The spelling of 1945780064 in words is "one billion, nine hundred forty-five million, seven hundred eighty thousand, sixty-four".