1203950945 has 4 divisors (see below), whose sum is σ = 1444741140. Its totient is φ = 963160752.

The previous prime is 1203950911. The next prime is 1203950947. The reversal of 1203950945 is 5490593021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5490593021 = 4019 ⋅1366159.

It can be written as a sum of positive squares in 2 ways, for example, as 395572321 + 808378624 = 19889^2 + 28432^2 .

It is a cyclic number.

It is not a de Polignac number, because 1203950945 - 2²² = 1199756641 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1203950899 and 1203950908.

It is not an unprimeable number, because it can be changed into a prime (1203950947) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 120395090 + ... + 120395099.

It is an arithmetic number, because the mean of its divisors is an integer number (361185285).

Almost surely, 2^1203950945 is an apocalyptic number.

It is an amenable number.

1203950945 is a deficient number, since it is larger than the sum of its proper divisors (240790195).

1203950945 is an equidigital number, since it uses as much as digits as its factorization.

1203950945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 240790194.

The product of its (nonzero) digits is 48600, while the sum is 38.

The square root of 1203950945 is about 34697.9962677962. The cubic root of 1203950945 is about 1063.8235431200.

The spelling of 1203950945 in words is "one billion, two hundred three million, nine hundred fifty thousand, nine hundred forty-five".