163801487 has 4 divisors (see below), whose sum is σ = 163880136. Its totient is φ = 163722840.

The previous prime is 163801459. The next prime is 163801493. The reversal of 163801487 is 784108361.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 784108361 = 1103 ⋅710887.

It is a cyclic number.

It is not a de Polignac number, because 163801487 - 2¹² = 163797391 is a prime.

It is a super-2 number, since 2×163801487² = 53661854286822338, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 163801487.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163801387) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36113 + ... + 40394.

It is an arithmetic number, because the mean of its divisors is an integer number (40970034).

Almost surely, 2^163801487 is an apocalyptic number.

163801487 is a deficient number, since it is larger than the sum of its proper divisors (78649).

163801487 is an equidigital number, since it uses as much as digits as its factorization.

163801487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78648.

The product of its (nonzero) digits is 32256, while the sum is 38.

The square root of 163801487 is about 12798.4954975184. The cubic root of 163801487 is about 547.1494243789.

The spelling of 163801487 in words is "one hundred sixty-three million, eight hundred one thousand, four hundred eighty-seven".