1945509152 has 12 divisors (see below), whose sum is σ = 3830221206. Its totient is φ = 972754560.

The previous prime is 1945509151. The next prime is 1945509169. The reversal of 1945509152 is 2519055491.

It can be written as a sum of positive squares in only one way, i.e., 1834922896 + 110586256 = 42836^2 + 10516^2 .

It is not an unprimeable number, because it can be changed into a prime (1945509151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30398549 + ... + 30398612.

Almost surely, 2^1945509152 is an apocalyptic number.

It is an amenable number.

1945509152 is a deficient number, since it is larger than the sum of its proper divisors (1884712054).

1945509152 is an equidigital number, since it uses as much as digits as its factorization.

1945509152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60797171 (or 60797163 counting only the distinct ones).

The product of its (nonzero) digits is 81000, while the sum is 41.

The square root of 1945509152 is about 44107.9261811298. The cubic root of 1945509152 is about 1248.3731694163.

The spelling of 1945509152 in words is "one billion, nine hundred forty-five million, five hundred nine thousand, one hundred fifty-two".