1939703745 has 32 divisors (see below), whose sum is σ = 3564748800. Its totient is φ = 882256320.

The previous prime is 1939703743. The next prime is 1939703761. The reversal of 1939703745 is 5473079391.

It is a happy number.

It is not a de Polignac number, because 1939703745 - 2¹ = 1939703743 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1939703694 and 1939703703.

It is not an unprimeable number, because it can be changed into a prime (1939703743) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 25521 + ... + 67310.

It is an arithmetic number, because the mean of its divisors is an integer number (111398400).

Almost surely, 2^1939703745 is an apocalyptic number.

1939703745 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1939703745 is a deficient number, since it is larger than the sum of its proper divisors (1625045055).

1939703745 is a wasteful number, since it uses less digits than its factorization.

1939703745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93045.

The product of its (nonzero) digits is 714420, while the sum is 48.

The square root of 1939703745 is about 44042.0679010421. The cubic root of 1939703745 is about 1247.1302154447.

The spelling of 1939703745 in words is "one billion, nine hundred thirty-nine million, seven hundred three thousand, seven hundred forty-five".