1909914147 has 24 divisors (see below), whose sum is σ = 3029238576. Its totient is φ = 1198374912.

The previous prime is 1909914131. The next prime is 1909914151. The reversal of 1909914147 is 7414199091.

It is not a de Polignac number, because 1909914147 - 2⁴ = 1909914131 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1909914157) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 227038 + ... + 235299.

It is an arithmetic number, because the mean of its divisors is an integer number (126218274).

Almost surely, 2^1909914147 is an apocalyptic number.

1909914147 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

1909914147 is a deficient number, since it is larger than the sum of its proper divisors (1119324429).

1909914147 is an equidigital number, since it uses as much as digits as its factorization.

1909914147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 462369 (or 462357 counting only the distinct ones).

The product of its (nonzero) digits is 81648, while the sum is 45.

The square root of 1909914147 is about 43702.5645357341. The cubic root of 1909914147 is about 1240.7128547250.

The spelling of 1909914147 in words is "one billion, nine hundred nine million, nine hundred fourteen thousand, one hundred forty-seven".