1909357137 has 8 divisors (see below), whose sum is σ = 2828677280. Its totient is φ = 1272904740.

The previous prime is 1909357127. The next prime is 1909357141. The reversal of 1909357137 is 7317539091.

It is not a de Polignac number, because 1909357137 - 2⁸ = 1909356881 is a prime.

It is a super-2 number, since 2×1909357137² = 7291289353225673538, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1909357092 and 1909357101.

It is not an unprimeable number, because it can be changed into a prime (1909357127) 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 7 ways as a sum of consecutive naturals, for example, 35358439 + ... + 35358492.

It is an arithmetic number, because the mean of its divisors is an integer number (353584660).

Almost surely, 2^1909357137 is an apocalyptic number.

It is an amenable number.

1909357137 is a deficient number, since it is larger than the sum of its proper divisors (919320143).

1909357137 is an equidigital number, since it uses as much as digits as its factorization.

1909357137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70716940 (or 70716934 counting only the distinct ones).

The product of its (nonzero) digits is 178605, while the sum is 45.

The square root of 1909357137 is about 43696.1913328839. The cubic root of 1909357137 is about 1240.5922285942.

The spelling of 1909357137 in words is "one billion, nine hundred nine million, three hundred fifty-seven thousand, one hundred thirty-seven".