1945645750 has 32 divisors (see below), whose sum is σ = 3856507200. Its totient is φ = 732476800.

The previous prime is 1945645747. The next prime is 1945645759. The reversal of 1945645750 is 575465491.

It is a self number, because there is not a number n which added to its sum of digits gives 1945645750.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1945645759) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 224650 + ... + 233149.

It is an arithmetic number, because the mean of its divisors is an integer number (120515850).

Almost surely, 2^1945645750 is an apocalyptic number.

1945645750 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1945645750 is a deficient number, since it is larger than the sum of its proper divisors (1910861450).

1945645750 is a wasteful number, since it uses less digits than its factorization.

1945645750 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 457833 (or 457823 counting only the distinct ones).

The product of its (nonzero) digits is 756000, while the sum is 46.

The square root of 1945645750 is about 44109.4746058032. The cubic root of 1945645750 is about 1248.4023856393.

The spelling of 1945645750 in words is "one billion, nine hundred forty-five million, six hundred forty-five thousand, seven hundred fifty".