863640151 has 16 divisors (see below), whose sum is σ = 957388320. Its totient is φ = 772485120.

The previous prime is 863640143. The next prime is 863640157. The reversal of 863640151 is 151046368.

It is a happy number.

It is not a de Polignac number, because 863640151 - 2³ = 863640143 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (863640157) 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 15 ways as a sum of consecutive naturals, for example, 407671 + ... + 409783.

It is an arithmetic number, because the mean of its divisors is an integer number (59836770).

Almost surely, 2^863640151 is an apocalyptic number.

863640151 is a deficient number, since it is larger than the sum of its proper divisors (93748169).

863640151 is a wasteful number, since it uses less digits than its factorization.

863640151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2706.

The product of its (nonzero) digits is 17280, while the sum is 34.

The square root of 863640151 is about 29387.7551201176. The cubic root of 863640151 is about 952.3083848839.

The spelling of 863640151 in words is "eight hundred sixty-three million, six hundred forty thousand, one hundred fifty-one".