18949350 has 48 divisors (see below), whose sum is σ = 53710848. Its totient is φ = 4331040.

The previous prime is 18949349. The next prime is 18949351. The reversal of 18949350 is 5394981.

It is an interprime number because it is at equal distance from previous prime (18949349) and next prime (18949351).

It is a junction number, because it is equal to n+sod(n) for n = 18949299 and 18949308.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18949351) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7974 + ... + 10073.

It is an arithmetic number, because the mean of its divisors is an integer number (1118976).

Almost surely, 2^18949350 is an apocalyptic number.

18949350 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18949350 is an abundant number, since it is smaller than the sum of its proper divisors (34761498).

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

18949350 is a wasteful number, since it uses less digits than its factorization.

18949350 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18069 (or 18064 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 39.

The square root of 18949350 is about 4353.0851128826. The cubic root of 18949350 is about 266.6028406274.

The spelling of 18949350 in words is "eighteen million, nine hundred forty-nine thousand, three hundred fifty".