18950356 has 12 divisors (see below), whose sum is σ = 33307092. Its totient is φ = 9434048.

The previous prime is 18950341. The next prime is 18950363. The reversal of 18950356 is 65305981.

It can be written as a sum of positive squares in 2 ways, for example, as 12138256 + 6812100 = 3484^2 + 2610^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9235 + ... + 11098.

It is an arithmetic number, because the mean of its divisors is an integer number (2775591).

Almost surely, 2^18950356 is an apocalyptic number.

It is an amenable number.

18950356 is a deficient number, since it is larger than the sum of its proper divisors (14356736).

18950356 is a wasteful number, since it uses less digits than its factorization.

18950356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20570 (or 20568 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 37.

The square root of 18950356 is about 4353.2006615822. The cubic root of 18950356 is about 266.6075584271.

It can be divided in two parts, 18950 and 356, that added together give a triangular number (19306 = T₁₉₆).

The spelling of 18950356 in words is "eighteen million, nine hundred fifty thousand, three hundred fifty-six".