1945023983 has 18 divisors (see below), whose sum is σ = 2313236016. Its totient is φ = 1629916344.

The previous prime is 1945023973. The next prime is 1945023991. The reversal of 1945023983 is 3893205491.

It is not a de Polignac number, because 1945023983 - 2¹⁸ = 1944761839 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1945023973) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 2115998 + ... + 2116916.

It is an arithmetic number, because the mean of its divisors is an integer number (128513112).

Almost surely, 2^1945023983 is an apocalyptic number.

1945023983 is a deficient number, since it is larger than the sum of its proper divisors (368212033).

1945023983 is an frugal number, since it uses more digits than its factorization.

1945023983 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1899 (or 973 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 44.

The square root of 1945023983 is about 44102.4260443799. The cubic root of 1945023983 is about 1248.2693881318.

The spelling of 1945023983 in words is "one billion, nine hundred forty-five million, twenty-three thousand, nine hundred eighty-three".