1939880513 has 8 divisors (see below), whose sum is σ = 2025390336. Its totient is φ = 1854468000.

The previous prime is 1939880497. The next prime is 1939880533. The reversal of 1939880513 is 3150889391.

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 1939880513 - 2⁴ = 1939880497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1939880533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18008 + ... + 64838.

It is an arithmetic number, because the mean of its divisors is an integer number (253173792).

Almost surely, 2^1939880513 is an apocalyptic number.

It is an amenable number.

1939880513 is a deficient number, since it is larger than the sum of its proper divisors (85509823).

1939880513 is a wasteful number, since it uses less digits than its factorization.

1939880513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48655.

The product of its (nonzero) digits is 233280, while the sum is 47.

The square root of 1939880513 is about 44044.0746639091. The cubic root of 1939880513 is about 1247.1680985523.

The spelling of 1939880513 in words is "one billion, nine hundred thirty-nine million, eight hundred eighty thousand, five hundred thirteen".