18959480 has 16 divisors (see below), whose sum is σ = 42658920. Its totient is φ = 7583776.

The previous prime is 18959419. The next prime is 18959483. The reversal of 18959480 is 8495981.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18959483) 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, 236954 + ... + 237033.

Almost surely, 2^18959480 is an apocalyptic number.

18959480 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18959480 is an abundant number, since it is smaller than the sum of its proper divisors (23699440).

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

18959480 is a wasteful number, since it uses less digits than its factorization.

18959480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 473998 (or 473994 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 44.

The square root of 18959480 is about 4354.2485000284. The cubic root of 18959480 is about 266.6503392781.

The spelling of 18959480 in words is "eighteen million, nine hundred fifty-nine thousand, four hundred eighty".