1939140065 has 8 divisors (see below), whose sum is σ = 2327971968. Its totient is φ = 1550642800.

The previous prime is 1939140029. The next prime is 1939140121. The reversal of 1939140065 is 5600419391.

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

It is not a de Polignac number, because 1939140065 - 2¹⁸ = 1938877921 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 70727 + ... + 94236.

It is an arithmetic number, because the mean of its divisors is an integer number (290996496).

Almost surely, 2^1939140065 is an apocalyptic number.

It is an amenable number.

1939140065 is a deficient number, since it is larger than the sum of its proper divisors (388831903).

1939140065 is a wasteful number, since it uses less digits than its factorization.

1939140065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167319.

The product of its (nonzero) digits is 29160, while the sum is 38.

The square root of 1939140065 is about 44035.6680998483. The cubic root of 1939140065 is about 1247.0093979455.

The spelling of 1939140065 in words is "one billion, nine hundred thirty-nine million, one hundred forty thousand, sixty-five".