1908496139 has 16 divisors (see below), whose sum is σ = 2204962560. Its totient is φ = 1634777760.

The previous prime is 1908496129. The next prime is 1908496157. The reversal of 1908496139 is 9316948091.

It is not a de Polignac number, because 1908496139 - 2⁴ = 1908496123 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1908496129) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39344 + ... + 73245.

It is an arithmetic number, because the mean of its divisors is an integer number (137810160).

Almost surely, 2^1908496139 is an apocalyptic number.

1908496139 is a deficient number, since it is larger than the sum of its proper divisors (296466421).

1908496139 is a wasteful number, since it uses less digits than its factorization.

1908496139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112690.

The product of its (nonzero) digits is 419904, while the sum is 50.

The square root of 1908496139 is about 43686.3381276115. The cubic root of 1908496139 is about 1240.4057246303.

The spelling of 1908496139 in words is "one billion, nine hundred eight million, four hundred ninety-six thousand, one hundred thirty-nine".