1945700720 has 20 divisors (see below), whose sum is σ = 4523754360. Its totient is φ = 778280256.

The previous prime is 1945700707. The next prime is 1945700737. The reversal of 1945700720 is 270075491.

It is a tau number, because it is divible by the number of its divisors (20).

It is a hoax number, since the sum of its digits (35) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12160550 + ... + 12160709.

It is an arithmetic number, because the mean of its divisors is an integer number (226187718).

Almost surely, 2^1945700720 is an apocalyptic number.

1945700720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1945700720 is an abundant number, since it is smaller than the sum of its proper divisors (2578053640).

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

1945700720 is a wasteful number, since it uses less digits than its factorization.

1945700720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24321272 (or 24321266 counting only the distinct ones).

The product of its (nonzero) digits is 17640, while the sum is 35.

The square root of 1945700720 is about 44110.0977101616. The cubic root of 1945700720 is about 1248.4141424956.

The spelling of 1945700720 in words is "one billion, nine hundred forty-five million, seven hundred thousand, seven hundred twenty".