1663167494 has 8 divisors (see below), whose sum is σ = 2641501368. Its totient is φ = 782667040.

The previous prime is 1663167491. The next prime is 1663167523. The reversal of 1663167494 is 4947613661.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×1663167494² = 5532252226196480072, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1663167491) 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, 24458312 + ... + 24458379.

It is an arithmetic number, because the mean of its divisors is an integer number (330187671).

Almost surely, 2^1663167494 is an apocalyptic number.

1663167494 is a deficient number, since it is larger than the sum of its proper divisors (978333874).

1663167494 is a wasteful number, since it uses less digits than its factorization.

1663167494 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48916710.

The product of its digits is 653184, while the sum is 47.

The square root of 1663167494 is about 40781.9505909171. The cubic root of 1663167494 is about 1184.8007745452.

It can be divided in two parts, 1663167 and 494, that added together give a palindrome (1663661).

The spelling of 1663167494 in words is "one billion, six hundred sixty-three million, one hundred sixty-seven thousand, four hundred ninety-four".