1945407038 has 4 divisors (see below), whose sum is σ = 2918110560. Its totient is φ = 972703518.

The previous prime is 1945407011. The next prime is 1945407043. The reversal of 1945407038 is 8307045491.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 1945406986 and 1945407004.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 486351758 + ... + 486351761.

It is an arithmetic number, because the mean of its divisors is an integer number (729527640).

Almost surely, 2^1945407038 is an apocalyptic number.

1945407038 is a deficient number, since it is larger than the sum of its proper divisors (972703522).

1945407038 is an equidigital number, since it uses as much as digits as its factorization.

1945407038 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 972703521.

The product of its (nonzero) digits is 120960, while the sum is 41.

The square root of 1945407038 is about 44106.7686188866. The cubic root of 1945407038 is about 1248.3513279003.

The spelling of 1945407038 in words is "one billion, nine hundred forty-five million, four hundred seven thousand, thirty-eight".