1929139475 has 6 divisors (see below), whose sum is σ = 2392132980. Its totient is φ = 1543311560.

The previous prime is 1929139441. The next prime is 1929139477. The reversal of 1929139475 is 5749319291.

It is not a de Polignac number, because 1929139475 - 2²² = 1924945171 is a prime.

It is a super-2 number, since 2×1929139475² = 7443158228006551250, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1929139477) 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 5 ways as a sum of consecutive naturals, for example, 38582765 + ... + 38582814.

It is an arithmetic number, because the mean of its divisors is an integer number (398688830).

Almost surely, 2^1929139475 is an apocalyptic number.

1929139475 is a deficient number, since it is larger than the sum of its proper divisors (462993505).

1929139475 is an equidigital number, since it uses as much as digits as its factorization.

1929139475 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77165589 (or 77165584 counting only the distinct ones).

The product of its digits is 612360, while the sum is 50.

The square root of 1929139475 is about 43921.9702996120. The cubic root of 1929139475 is about 1244.8619976820.

The spelling of 1929139475 in words is "one billion, nine hundred twenty-nine million, one hundred thirty-nine thousand, four hundred seventy-five".