1909914149 has 16 divisors (see below), whose sum is σ = 2245467840. Its totient is φ = 1601544960.

The previous prime is 1909914131. The next prime is 1909914151. The reversal of 1909914149 is 9414199091.

It is a cyclic number.

It is not a de Polignac number, because 1909914149 - 2⁸ = 1909913893 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1909914109) 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, 228557 + ... + 236765.

It is an arithmetic number, because the mean of its divisors is an integer number (140341740).

Almost surely, 2^1909914149 is an apocalyptic number.

It is an amenable number.

1909914149 is a deficient number, since it is larger than the sum of its proper divisors (335553691).

1909914149 is a wasteful number, since it uses less digits than its factorization.

1909914149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9860.

The product of its (nonzero) digits is 104976, while the sum is 47.

The square root of 1909914149 is about 43702.5645586160. The cubic root of 1909914149 is about 1240.7128551581.

The spelling of 1909914149 in words is "one billion, nine hundred nine million, nine hundred fourteen thousand, one hundred forty-nine".