1945649200 has 60 divisors (see below), whose sum is σ = 5099381208. Its totient is φ = 707507200.

The previous prime is 1945649161. The next prime is 1945649227. The reversal of 1945649200 is 29465491.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 216697 + ... + 225496.

Almost surely, 2^1945649200 is an apocalyptic number.

1945649200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1945649200 is an abundant number, since it is smaller than the sum of its proper divisors (3153732008).

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

1945649200 is a wasteful number, since it uses less digits than its factorization.

1945649200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 442222 (or 442211 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 40.

The square root of 1945649200 is about 44109.5137130302. The cubic root of 1945649200 is about 1248.4031235238.

The spelling of 1945649200 in words is "one billion, nine hundred forty-five million, six hundred forty-nine thousand, two hundred".