1945381067 has 8 divisors (see below), whose sum is σ = 2224133856. Its totient is φ = 1666838592.

The previous prime is 1945381057. The next prime is 1945381069. The reversal of 1945381067 is 7601835491.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1945381067 - 2⁴ = 1945381051 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1945381069) 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 7 ways as a sum of consecutive naturals, for example, 32228 + ... + 70209.

It is an arithmetic number, because the mean of its divisors is an integer number (278016732).

Almost surely, 2^1945381067 is an apocalyptic number.

1945381067 is a deficient number, since it is larger than the sum of its proper divisors (278752789).

1945381067 is a wasteful number, since it uses less digits than its factorization.

1945381067 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105157.

The product of its (nonzero) digits is 181440, while the sum is 44.

The square root of 1945381067 is about 44106.4742073088. The cubic root of 1945381067 is about 1248.3457727515.

The spelling of 1945381067 in words is "one billion, nine hundred forty-five million, three hundred eighty-one thousand, sixty-seven".