1939286481 has 12 divisors (see below), whose sum is σ = 2842150416. Its totient is φ = 1175324920.

The previous prime is 1939286443. The next prime is 1939286527. The reversal of 1939286481 is 1846829391.

It is not a de Polignac number, because 1939286481 - 2²⁶ = 1872177617 is a prime.

It is a super-2 number, since 2×1939286481² = 7521664110778726722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1939286431) 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 11 ways as a sum of consecutive naturals, for example, 2670831 + ... + 2671556.

It is an arithmetic number, because the mean of its divisors is an integer number (236845868).

Almost surely, 2^1939286481 is an apocalyptic number.

1939286481 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1939286481 is a deficient number, since it is larger than the sum of its proper divisors (902863935).

1939286481 is a wasteful number, since it uses less digits than its factorization.

1939286481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5342412 (or 5342401 counting only the distinct ones).

The product of its digits is 746496, while the sum is 51.

The square root of 1939286481 is about 44037.3305389870. The cubic root of 1939286481 is about 1247.0407825674.

It can be divided in two parts, 1939 and 286481, that added together give a triangular number (288420 = T₇₅₉).

The spelling of 1939286481 in words is "one billion, nine hundred thirty-nine million, two hundred eighty-six thousand, four hundred eighty-one".