2152117907 has 4 divisors (see below), whose sum is σ = 2278713096. Its totient is φ = 2025522720.

The previous prime is 2152117871. The next prime is 2152117939. The reversal of 2152117907 is 7097112512.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2152117907 - 2¹² = 2152113811 is a prime.

It is a super-2 number, since 2×2152117907² = 9263222971260121298, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2152117967) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 63297569 + ... + 63297602.

It is an arithmetic number, because the mean of its divisors is an integer number (569678274).

Almost surely, 2^2152117907 is an apocalyptic number.

2152117907 is a deficient number, since it is larger than the sum of its proper divisors (126595189).

2152117907 is a wasteful number, since it uses less digits than its factorization.

2152117907 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126595188.

The product of its (nonzero) digits is 8820, while the sum is 35.

The square root of 2152117907 is about 46390.9248344975. The cubic root of 2152117907 is about 1291.0865406544.

The spelling of 2152117907 in words is "two billion, one hundred fifty-two million, one hundred seventeen thousand, nine hundred seven".