118621503 has 180 divisors, whose sum is σ = 256844280. Its totient is φ = 53887680.

The previous prime is 118621499. The next prime is 118621543. The reversal of 118621503 is 305126811.

It is not a de Polignac number, because 118621503 - 2² = 118621499 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (118621543) 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 179 ways as a sum of consecutive naturals, for example, 6243228 + ... + 6243246.

Almost surely, 2^118621503 is an apocalyptic number.

118621503 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

118621503 is an abundant number, since it is smaller than the sum of its proper divisors (138222777).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

118621503 is a wasteful number, since it uses less digits than its factorization.

118621503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80 (or 53 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 27.

The square root of 118621503 is about 10891.3499163327. The cubic root of 118621503 is about 491.3464329073.

The spelling of 118621503 in words is "one hundred eighteen million, six hundred twenty-one thousand, five hundred three".