18949750 has 32 divisors (see below), whose sum is σ = 35736480. Its totient is φ = 7524000.

The previous prime is 18949741. The next prime is 18949751. The reversal of 18949750 is 5794981.

It is a junction number, because it is equal to n+sod(n) for n = 18949697 and 18949706.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18949751) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 57085 + ... + 57415.

It is an arithmetic number, because the mean of its divisors is an integer number (1116765).

Almost surely, 2^18949750 is an apocalyptic number.

18949750 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18949750 is a deficient number, since it is larger than the sum of its proper divisors (16786730).

18949750 is a wasteful number, since it uses less digits than its factorization.

18949750 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 577 (or 567 counting only the distinct ones).

The product of its (nonzero) digits is 90720, while the sum is 43.

The square root of 18949750 is about 4353.1310570669. The cubic root of 18949750 is about 266.6047165121.

The spelling of 18949750 in words is "eighteen million, nine hundred forty-nine thousand, seven hundred fifty".