18992950 has 12 divisors (see below), whose sum is σ = 35326980. Its totient is φ = 7597160.

The previous prime is 18992903. The next prime is 18992993. The reversal of 18992950 is 5929981.

It is a junction number, because it is equal to n+sod(n) for n = 18992897 and 18992906.

It is a congruent number.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 189880 + ... + 189979.

It is an arithmetic number, because the mean of its divisors is an integer number (2943915).

Almost surely, 2^18992950 is an apocalyptic number.

18992950 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18992950 is a deficient number, since it is larger than the sum of its proper divisors (16334030).

18992950 is a wasteful number, since it uses less digits than its factorization.

18992950 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 379871 (or 379866 counting only the distinct ones).

The product of its (nonzero) digits is 58320, while the sum is 43.

The square root of 18992950 is about 4358.0901780482. The cubic root of 18992950 is about 266.8071568742.

It can be divided in two parts, 189 and 92950, that added together give a palindrome (93139).

The spelling of 18992950 in words is "eighteen million, nine hundred ninety-two thousand, nine hundred fifty".