1945476464 has 20 divisors (see below), whose sum is σ = 3991088304. Its totient is φ = 915518208.

The previous prime is 1945476457. The next prime is 1945476479. The reversal of 1945476464 is 4646745491.

It is a Smith number, since the sum of its digits (50) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

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, 3575972 + ... + 3576515.

Almost surely, 2^1945476464 is an apocalyptic number.

It is an amenable number.

1945476464 is an abundant number, since it is smaller than the sum of its proper divisors (2045611840).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1945476464 is a wasteful number, since it uses less digits than its factorization.

1945476464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7152512 (or 7152506 counting only the distinct ones).

The product of its digits is 2903040, while the sum is 50.

The square root of 1945476464 is about 44107.5556339274. Note that the first 3 decimals coincide. The cubic root of 1945476464 is about 1248.3661777503.

The spelling of 1945476464 in words is "one billion, nine hundred forty-five million, four hundred seventy-six thousand, four hundred sixty-four".